Def. no expert but I believe atomic do a better oil pump setup as ours are known to go to poo, do the spigot bearing while your at it, maybe get your sump checked for being dead flat at joining surface to prevent oil leaks (machinist would probly do that), arp head bolts, you'll probly need to buy a full engine gasket kit which will have all your valve stem seals n that, up to you if you wanna change valves while your at it to the slightly oversized stainless steel type which are avail. (you probly got your money's worth out of the last ones anyway), ask the fella what porting will set you back on the head but be careful who you use maybe look at doing a timing chain kit too Atomic harmonic balancer (probly not worth worrying about) Get your injectors cleaned