So you want 2 go Big block...Read this first!

"I agree about the 4 spd stuff. costs for a BB 4 spd, and everything, and a SB 4 spd and everything are almost the same. A couple hundred more for the BB because odds of finding used BB clutch lonkage for an A body would be rare, so you will have to buy it new."

That's why I never even looked for that stuff. A little cut here, weld there and you've made it yourself. As a matter of fact, both of my sons' big block four speed a-bodies have relocated z-bars (the exhaust fits better this way). There was no factory setup for the big bell housing anyway.

This is hot rodding. Making parts, modifying parts, etc. In some ways things are way too easy these days. Just hop on the internet, order a bunch of parts with instructions, and throw the car together.