Repro parts place aluminum tripower 66 manifold
 

Has anybody use this manifold? I have heat cracks in the lowers plenum floor as well as down the side of the center carburetor bore and across the top between the throttle bores. so I have to try something different? They have been making them long enough I would assume the quality is good and the fit is good but can’t find anything on this tripower site talking about it in the last couple years.. are the 2018/19 units well done? Anyone?

I bought one two months a go from The Pontiac Tripower team it looks ok some port alignment work is needed and some rough edges smoothed in the plenum area.
Have not try it out on a engine for fit
But it look like it will work.

http://www.pontiactripower.com/catalog/1966-tripower