In my experience both the 2004R and the 700R-4 perform well as conversions. It's all a mater of availability, cost, and mods needed to make them work.
You have to make a lot of modifications for either of them.
Fred

Last edited by rfs56trk; 07/11/2012 11:04 AM.
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine