When I mounted the turbo I used one stock hole and drilled two more to match the turbo mount. Then I cut the manifold bigger and got into the exhaust heat jacket which I had to fill. It would be a lot easier to use a 4bbl intake and make an adapter plate for the turbo. I'll pull the turbo and take a picture of the manifold if it will help. You could probably make an adapter on the stock manifold. I turned one over once and made an adapter plate over the heat riser side to mount a WCFB. It sorta' worked.
PICTURES? Go to that Stovebolt web site and find the
Short Bus forum. It has lots of computer info. That is where I learned to post pictures and links to pictures. Beater
