true, but i want to muck around, i have been wanting to build one for a long time now, i have a spare good running rb30e here, and i got a 25 head cheap, so why not?
yer true, i could go forged pistons, but thats another $1000 - $2000 for pistons then i might aswell replace the rods. If i dropped a 25 into it i would be following much the same process with the mods. Plus there is too many rb25 r31's around. R31's need 30 love