similar spec to mine mate and thats only running 170 at the wheels still feels rapid tho i wouldnt bother with shot peened rods at that spec as they should not be a problem so long as they are not revved over 6500rpm if your engine threw a rod before it was probably a fault with the rod or rod bolts, while i had it stripped i would get the rods checked by an engineer and fit arp bolts while i was at it if i was you