I agree, a lot of variables here. You will need to know how much of your stock shaft you are going to leave after you cut it. What type of connector you are going to use and the dimensions of the connector. What kind of steering wheel you are going to use, and where it is comfortable for you. Also is this the final product or is power steering in the future.
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