My friend has a '91 Teg GS that has over 220k and going, the car w/ a CAI, header, and some custom piping for a different muffler beats the hell outta 2G's w/ more than that

we figure that the head was shaved to increase compression or overbore to the block, we don't know 'til we open up the engine, since the previous owner(s) didn't tell use what all went into the engine rebuild

here's the question we're building a turbo kit for the car, saying the engine's still good internally, should he spend the $ to rebuild again w/ lower compression pistons and over stronger internals or get a 3G LS motor or say a B16A and turbo one of those 2 engine's instead?

Thanx,

Jay