I have considered it for my car too.

The cost needs to be compared to switching to a PG trans, which should also work in our application. The PG change will be costlier, but that gear set for a 727 could go a long way toward the conversion.

Two sources of alternative ratios for the 727:

http://www.aandatrans.com/
http://www.gotranzact.com/

I exchanged a couple emails with TranzAct last fall, but he wouldn't answer two questions important to me.
1) What price do they charge
2) Do they have parts on the shelf to ship, or will I wait...

From A&A website:
727 5-Gear Steel Front Straight Cut Planetary and 4-Gear Aluminum Rear Planetary 2.28/1.45/1:1
$1,750.00


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1