Well I'm building a fully worked b18a head right now.. (p&p.. cams)

I would like a fresh short block.. but cant decide whether to get a b20long or b18b.

they're both about the same cost.. but the b20 has a low compression and the b18b is .2 smaller but has more compression..

What would benefit me most?

I want to take this stock bottom end to 8grand as well.

 

oh yea forgot to say that... i might get the head milled down a little, plus run a thinner head gasket.