first off is this possible ? i just bought a 91 teg for parts and the guy i bought it from was running a all motor b20 with a little porting done to the head with pr3 cams.he then switched to b20 lsvtec. and gave me the head with the car. can i put this head on my b18a is it worth it or just work on the valve train on my head ? also can i run high compression pistons in my block with a ls head ?