I plan on putting a turbo in my car in the near future, however I have 107k miles on it so I know if I want to get any real power out of it I'll need to do some rebuilding. I was thinking of going with new pistons, either at 9:1 compression or 10.5:1, new piston rings, block guard, and head gasket.

What other internals would I need to strengthen my future turbocharged car and which compression should I go with, 9 or 10.5?