383 375HP 400+ Tourque ...What trans?

[captnblood34]

Buying a 383 like the header says at the end of the year, 69 C10 Stepside,the truck is old so most mechanical/moving parts are getting replaced. Cutting corners on cheap **** usually bites me in the ass, so we're not trying to go that route.

1. I live in SD, lots of highways, T56 overdrive ???? Pass on the 4L80E's....

2. Reinforce the frame?

3. Rear end is 3.73, who makes a reliable fresh kit to replace the old?

4. Its going to be DD/ and a frequent autocross contestant at Qualcom!!!

5. Anyone who has done something similar, let me get your input.

Thanks in advance.

J