What made you go with that engine? Gonna be stock or $$$? HP?
I could really get into something like that. Would have to see if I could wedge a german powerplant in there though.
How hard has the build been to date? How much more do you have to go?
Is this going to be strictly a street car for you?
I wanted to use a Cayenne TT, or a BMW V10 or an Audi S4 V8 or similar powerplant. I love German cars and have 3 of them right now. But every time I did the numbers, they just didn't add up. The LS7 has a conservative 500 HP out of the box, and with just a cam kit and decent exhaust it can easily put out 600+ HP. What was worse, is the weight problem. THe LS7 engine, out of the crate, weighs less than 370 lbs-- the others are as much as 2-300 lbs heavier, so there is a tremendous amount of power they have to put out to just get even from the HP/Lb perspective, and of course you still have to lug that heavy lump through the turns.
So the LS series engines, as "dumb" as they might appear, just seemed to be the clear value winner. The LS7 may not have as much bling factor as the others, but "bling don't impress the timers".
Finally, performance aside, they are pretty cheap, when you compare new-to-new. You could buy crate LS7s all day for under $13K when I bought mine. You don't want to know what a crate Cayanne TT engine costs.
It will be stock for phase 1, then we'll see whether I need more. Remember though, as it sits it will have a power-to-weight ratio better than the current GrandAm prototype cars. Not too shabby for a street car.
As far as the car is concerned, it really is a great kit, though clearly not as mature as the Ultima. There are still plenty of opportunities to develop the car, including the expected lthings ike hinges and interior details (though the SL-C interior looks far better than the GTR will ever look, based on the many Ultimas I've seen).
I'm still in the early days with the car, trying to work out issues of engine front dress, plumbing, etc. It should be a 2 year project, longer if things like the AC turn out to take longer to develop than I plan for now.
The plan is strictly street duty with an occasional track day a possibility. It's too expensive (in terms of money and time) for me to use it as a race car- I just couldn't afford to ball it up, which is how you have to approach real race cars.