If you buy a used set of heads it is just like any other used heads. It is not practical to cut guides and weld and move ports around on used heads. That is not the way to go with used heads IMO. However get some raw castings and have at it.

Bob tried the M&M intake and it had huge cylinder to cylinder issues. The single four 2819 made more power. I know of several Chevy guys who don't like the M&M either.

Porting on an existing head and going to tunnel ram is not going to net 950-975 IMO. My current engine dynoed at 903HP with Q16. I can tell you I have ran it with the trick carb and Q16 as well as my carb and 112. There is not much ET and no MPH difference. In my car this engine is not making much more man 850 HP.

EEI has a drag engine with tunnel ram and two fours for sale. I don't know what he made for HP with the 358 in this form.

A Bruno liberty combo is what these engines are going to like.

I got a little secret coming out soon for testing. Then over the winter it will get some changes and really see what can happen.