Who wants a mopar turbo kit?!?!
Good on the OP to take on a task such as this.... Thinking about the effort a TTI company makes to get headers to fit everything should show how difficult making something like this work is a challenge also....
In the 90's I was deep into the Turbo Buick V-6 cars so I have been around a little bit of this. In fact if I keep my 72 somewhere in the year 2018 I may put a Turbocharged setup on the car. In fact, I still have a V6 long block with accessories on the stand at my dad's which will be used as my mockup process. Blah blah blah to that lol...
I posted because one of the aggravating parts of the Buicks was keep the hot side sealed up. The manifolds were Tubular and cracking of the welds was a common problem. My advice is if you want reliability to try and retain the manifolds. The OP has already proven you can get the power and I will take a sealed Manifold system any day of the week over a Tubular design that may leak. It will make that much of a difference...
I am curious. Have you put any thought into a Air/air Intercooler setup?
JW