You can probably sell your entire z6 swap (with tranny, ECU, etc.) for around $800. You can get a good z1 swap (ECU, tranny, etc.) for less than that.
My engine was $550 shipped to my door. ECU was $30. You can probably get the tranny for next to nothing (people just throw these things away). You can get a EGR control box for around $20 on honda-tech.
I've actually seen entire Z1 swaps go for $200 on honda-tech before.
FWIW, I bought my d16z6 complete swap (came w/ a DC ceramic header, too) from a private owner, 98k for $500. From what I've seen, that's the going rate for a z6 swap--maybe $600.