Ok so I have a GSR block, i have my LS 89mm crank lined up. I'm going to boring my block over to 82mm, possibility of sending it out to be sleeved and bored to 84mm. Im running a B16a head.

Now what I need help with is if I run an LS crank (89mm) whats my rod stroke ratio? I dont know what the rod length is. Im almost certain its the length of the rod divided by the stroke or am i backwards?

And now if i run an LS crank, I would be using LS rods. So, next step is the pistons. I'd like to run all motor. Compression of up to 13.0:1. Whats the best piston for ideal conditions. Now by conditions i mean: Allowing enough valve clearance, the proper compression ratio, etc.

Whats my best bet for this build? Crank, rod, piston combo?