anytime injectors are swapped the car needs to be retuned plain and simple. not only from a performance standpoint but also from a driveability standpoint.....especially on later model obd2 vehicles. the ECU has no clue that you changed injectors and will try to compensate but it will never be perfect.

if you want the best mileage and performance after an injector swap you need to datalog your STFT's, and LTFT's then tweak your MAF transfer function accordingly, along with loading the correct value files for the injectors you have.

since when did the windsor v8's have 14lb injectors? i have yet to ever see a mid 80's+ fuel injected 302/351 with something other than 19lb or 24lb injectors for the lightning and cobra.

Hmmm I was collecting info a while back for sources of 19lb injectors, and was told some of the crown vics, econolines and trucks had 14lb on the windsors. It was as a caution, "Not all lower output windsors have 19lb..." Coming to look up the info again, I'm thinking that where I got it from the first time may have confused the windsor and modular V8s.

Wait, maybe that is right... look up the 14lb injector for the '95 Escort at rockauto.com and it crosses to this lot...

FORD AEROSTAR (1986 - 1991)
FORD BRONCO (1987 - 1993)
FORD BRONCO II (1986 - 1990)
FORD COUNTRY SQUIRE (1987 - 1991)
FORD COUNTRY SQUIRE LX (1987 - 1991)
FORD CROWN VICTORIA (1989 - 1991)
FORD CROWN VICTORIA LX (1989 - 1991)
FORD CROWN VICTORIA S (1989 - 1991)
FORD E SUPER DUTY 1996
FORD E-150 ECONOLINE (1987 - 1996)
FORD E-150 ECONOLINE CLUB WAGON (1987 - 1996)
FORD E-150 ECONOLINE SUPER (1987 - 1991)
FORD E-250 ECONOLINE (1987 - 1996)
FORD E-250 ECONOLINE CLUB WAGON (1987 - 1991)
FORD E-250 ECONOLINE HD 1991
FORD E-250 ECONOLINE SUPER (1987 - 1996)
FORD E-350 ECONOLINE (1987 - 1996)
FORD E-350 ECONOLINE HD CLUB WAGON (1992 - 1996)
FORD E-350 ECONOLINE SUPER (1987 - 1996)
FORD E-350 ECONOLINE SUPER WAGON (1987 - 1996)
FORD ESCORT (1993 - 1996)
FORD ESCORT LX (1991 - 1996)
FORD ESCORT PONY (1991 - 1992)
FORD ESCORT SPORT (1993 - 1995)
FORD F-150 (1987 - 1996)
FORD F-150 SUPER CAB (1987 - 1996)
FORD F-250 (1987 - 1996)
FORD F-250 SUPER CAB (1987 - 1996)
FORD F-350 (1987 - 1996)
FORD F-350 SUPER CAB (1988 - 1989)
FORD F53 (1988 - 1989)
FORD LTD COUNTRY SQUIRE 1986
FORD LTD CROWN VICTORIA (1986 - 1988)
FORD LTD CROWN VICTORIA LX (1987 - 1988)
FORD LTD CROWN VICTORIA S (1987 - 1988)
FORD MUSTANG (1996 - 1998)
FORD MUSTANG LX (1991 - 1993)
FORD RANGER (1986 - 1994)
FORD RANGER SUPER (1986 - 1994)
FORD TAURUS 1986
FORD TAURUS GL (1987 - 1993)
FORD TAURUS L (1987 - 1992)
FORD TAURUS LX (1987 - 1993)
FORD TAURUS MT5 1987
FORD TEMPO GL 1992
FORD TEMPO LX 1992
FORD THUNDERBIRD (1986 - 1992)
FORD THUNDERBIRD LX (1987 - 1997)
FORD THUNDERBIRD SPORT (1987 - 1988)
FORD WINDSTAR 1995
LINCOLN CONTINENTAL (1986 - 1990)
LINCOLN CONTINENTAL EXECUTIVE (1991 - 1994)
LINCOLN CONTINENTAL GIVENCHY 1987
LINCOLN CONTINENTAL SIGNATURE (1988 - 1994)
LINCOLN MARK VII (1986 - 1987)
LINCOLN MARK VII BILL BLASS (1987 - 1989)
LINCOLN MARK VII LSC (1987 - 1989)
LINCOLN TOWN CAR (1986 - 1990)
LINCOLN TOWN CAR CARTIER (1987 - 1990)
LINCOLN TOWN CAR SIGNATURE (1987 - 1990)
LINCOLN TOWN CAR SIGNATURE SE 1989
MERCURY COLONY PARK (1987 - 1991)
MERCURY COUGAR 1986
MERCURY COUGAR 30TH ANNIVERSARY 1997
MERCURY COUGAR LS (1987 - 1992)
MERCURY COUGAR XR-7 (1987 - 1997)
MERCURY GRAND MARQUIS (1986 - 1991)
MERCURY MARQUIS 1985
MERCURY SABLE (1986 - 1993)
MERCURY TOPAZ (1988 - 1991)
MERCURY TRACER (1991 - 1993)
MERCURY TRACER TRIO (1994 - 1996)

Pre-91 V8s should have been Windsors?

True, but swapping to same style/type injector in a +/- 25% range is likely to work reasonably well, because that's about how much room the ECU has for the trim. Going to injectors with significantly different characteristics, open time etc, like from 4 pintle bosch/ford to GM ball type isn't gonna leave you with a happy car though even if pph is same.