That transmission is very short compared to the vx/cx trans. For a compromise in economy and performance the dx/lx transmission has okay gearing, but you'll be out of lean burn by 65mph or so vs 75 with the stock ratio transmission. The beauty is no one is typically looking for the tall ratio transmissions, so they can be had fairly inexpensively.
I exit lean burn when my life is at risk.
1998 Odyssey 24.1 mpg average
1984 crx project now on the road