I need to cross the finish line about 500 RPM more than I am with the 4.56’s. I cross about 6500 and it really needs to be 7000 and 7200 wouldn’t hurt my feelings. And I need more low gear. I can tell that by how the clutch is tuned.
So I got lucky that I need more gear to get the finish line RPM up. Otherwise I’d need a lower 1st gear and I can’t go any lower without a 5 speed of some kind.
And as far as I know, there is yet to be a 5 speed that doesn’t require some cutting of the chassis to get it in there, and I don’t want to do that to a factory 340 day 2 car.
I could maybe look into the Passon 5 speed, but IIRC the first gear in that is pretty tall.