just don't do what this one guy i know did. ls block with b16 crank.
and since you already got a gsr head, i would just go ahead and start workin on a ls/vtec build. and why the CTR pistons? are you gonna be running all motor or boostin? all motor, yea try out the CTR heads, boostin, go aftermarket with some JE heads and eagle rods.
thumbs down on the b16 block, just doesn't give the car a lot of tq, IMO.