Mine is in now and it was the best thing that I have done to the 53. Cruising on the freeway now. The 1st gear in the sm420 is still very low, only use it at stop signs on hills.
Mine cost me only the parts, I set it up myself, I wouldn't of paid somebody to do it though.
Steve


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration