My buddy is building a superchared gsr. Right now he has everything he needs but he's at a standstill because he has two blocks and dont know which to use. One block is a full oem gsr block, the other is a ls block with american type R pistons. Both blocks have brand new rings and bearings ect. I said go with the ls block but he wants to use the gsr. He don't feel the ls block will hold up and fears that one of the rods will break. Which one do you guys perfer?

Heres what he has
B18c1 head
type R exhaust cam
gsr intake cam
68mm throttle body
Rmf header
JRSC
b20 pulley
LHT intercooler
50 shot wet nitrous
440 injectors