[Rich Biebel]

The Pontiac F.I. unit was made by Rochester just like the Chevy so yes they were similar but did not interchange in anyway,,,,

The Pontiac unit fit Pontiac heads...had a separate water crossover manifold and a mechanical drive type distributer.

I never worked on any F.I unit Chevy or Pontiac so my knowledge about them is very limited.

The Pontiac F.I. unit I had sat in my basement for a few years until I sold it.......I recall paying less than $100 for it and selling it for about $300. I can only guess what one would sell for today....but know it must be thousands of dollars....
They used very small copper fuel lines to nozzles in the intake as I recall.....and the distributer drove a pump....but I have zero hands on knowledge here and it has been about 40 years since I even saw one !

I had friends who raced them on Chevy's and had no problem with them but you had to know what you were doing with them for sure....and they did have a bad reputation on street cars like Corvettes......The rap was that they leaked and were hard to keep in tune and caused fires......

I worked on a lot of HP cars in the old days.....Never once worked on a Fuelie Corvette and never, ever saw a F.I. Pontiac on the street...very rare units for sure....