It's been my experience that when you make modifications to one thing it creates the need for modifications to several other things. It may be difficult to find standard bolt in parts for this conversion. However, most driveline shops can come up with yokes and step down u-joints to fit your drive shaft if needed.
Fred


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