I just saw the thread and I do have some thoughts. I have a SC on a motor built for a SC and it is awesome. If you want to go there, do it!! I'd suggest to find another motor, preferably by scrapping a rust bucket or 2 and get the best parts of the lot, because they are expensive if you go buying them. Second, if you want to simply up the compression, you can have the head decked, but you need to have shorter push rods. My sons TR6 had this done to it. they are very low compression and it did make a world of difference. Really though, horsepower is money and a willingness to modify. Decking the motor will probably give you the most HP for the money. Good luck.