#1, the intake we are working on could technically be used for a non intercooled car. It would require a pipe from the re-clocked turbo to loop around to the front of the intake and into the Tb. There would be minimal lag, if it were even noticable at all. It would add a good place to install an alchy Jet, and could easily be upgraded to intercooled later.
As far as passing the back ports goes, the addition of the plenum area allows for equalization of the intake charge and all but eliminates that type of problem. Conceptually such an intake would work, but you would still have the issue of the TB being bolted to the side of a hot turbo. PLus, as I understand physics(not much now so hang on) the blow through throttle body is a better set up than the "suck through".
#2, the closer the tb is to the ports, the better throttle response you are going to have. The difference in response between the v2 cars and the "spearco" type conversions is/was incredible. Right now at the shop we have a V2 intake off the car, and a car with the complete v2 installed. We are essentially working out the bugs on the V2 to create a more refined version. (If you have seen the v2 T-stat housing, you know what I am talking about.)
#3, My first inclination was to use the 86-87 intake and modify the doghouse so a stock location re-clock would work. But its not gonna happen without way more work than it is worth. First of all, the doghouse would have to be cut basically in half to accomodate the turbo outlet, and even then there are no brackets for the turbo. All would have to be adapted or fabricated. One huge problem is that the T-stat housing would exit right into the alternator. That's not gonna work at all. you would have to relocate basically everthing on the intake to get it to work, coil, etc, etc. When you look at the gutted hotair intake, with a new port floor, it looks just like the 86-87 intake anyway.
quite honestly, if there was a big enough market for the V3 style, we would run production on them. I just think it is crazy to go to all that trouble and not realize what the Buick engineers did, there is a better way to do it. And, while I like the idea of being Lee Thompson..or turbo6x2 it is easier to build power with a cooler charge. If it were as easy in the hotair, they would be much more popular. And we would all be in the 11's with these cars. I have only heard a few bad reports about the v2, and I have wanted one ever since that Gp went south. I thought others did to, and now I'm gonna make that a possibility.