Yeah I have been using zeal autowerks but I had though all F and H rods had a 50mm big end, turns out the F20b does not and is the exact same length I needed.
so this build is going to go one of 2 ways. the direction it goes is determined by how cheap I can find a sleeved block
here is a quick run down on the bottom end (i know this isnt the place lol) (the head will be my b18c1 head that already has springs and Ti retainers in it, ill use pro2's or 3's for cams)
if I cant get a cheap sleeved block im going to use a b16a crank, f20b rods, 85mm b20 pistons and b20 block (1756 cc)
if I can get a sleeved block
it will be a b16a crank, f20b rods, 87mm h23a pistons(0 dome/dish and fit the f20b rods) and a sleeved b18 block (1840 cc)