Not that anyone has mentioned this but using the stock trans with the additional torque can bring on a few additional problems. They are the weak point especially the u-joint. If it were me I would consider changing to an open drive line. When I did my '50 a few years back with a '59 235 I used a '60 bell housing and a Vega Saginaw 4-speed with the 3.10 low gear. The rear was a '56 Chev with 3.31 gears. At the time the trans was $50. Drum to drum rear was $100 and the bellhousing was a freebie. The only thing I did was redrill holes in the rear spring perches. Build a rear trans mount and the most difficult was to move the shifter to miss the stock seat; but it was all worth it.
Good luck I'm sure you will like the finished product.........
