All help is appreciated, and reps for sound advice.

I'm doing an all motor gsr build in my Integra and I'm trying to figure out the best way to get my desired goals. I've already purchased Crower cams and valvetrain for the head along with Ferrea valves. I have an intake manifold, throttle body, intake and exhaust. My questions are about the bottom end.

I'm looking for around 11.5:1 to 12:1 compression, and I was looking into using b16 pistons. The question is, which set? I have an ls block and a gsr block with crank, rods and pistons still in it. Which brings me to question two. Use the gsr crank and rods or ls crank and rods? Is there a benefit or down side to either?

Finally, I'm going to hone the block I use. My question here is should I just bore .25 over and get oversized pistons and rings, or can I put new factory size pistons and rings on a honed block?

Thanks again for any input, again reps will be given to all useful advice.