I read the thread in the Engines forum about the Compagnucci Engines, and I even looked on their website and e-mailed them about pricing for them. However, I never got a reply. I would really like to know how the engine performs and how much you paid for it.

I would try and put the engine in the car, and see what happens then. It's worth a try, and you have nothing to lose. Who knows, it might work extremely well and inspire loads of people to try it!