I recommend going here : http://www.ckperformance.com/index.html Nothing but rave reviews from users - on a couple of different on-line Lists . Read the set-ups on Trannies he has put together - I'm looking at the R 200 R4 Stage II for a '66 GTO ragtop project . I like lightweight components a lot - Josh turned me onto the 200 R4 as an Quick-Shifting Lightweight - and when Built - Rugged 4 speed Trans . As for Turbo Hydro 400 s - I ran a new one in the Goat for two years . Overall a Great transmission - shifts well - good manners . I read a number of on-line Lists as to recommendations - gripes & whos' who in the Automatic Rebuilding Arena . Got a good reply from the Owner - who is on Long Island - all people that had posted on-line posted all good - so I'll pass this along . Gasoline is $3.00 in California ! Hey ! - Gimme a 401 with dual Quads ! I'm goin' to Daytona Beach for a Vacation someday .................. Brien. NEW YORK