Type R psitons in LS?

Can u fit integra type R pistons into an LS engine and Can all B series pistons be interchangeable with each other?

Once i build my head im gonna put in some high compression pistions into my LS block. im looking into integra type r pistons. the compression ratio on these pistions are 11.0:1 right?

thanks alot man. that site was very useful.