New head bolts or ARP reuseable ones, new coolant elbows, rear engine seal on the motor (they like to leak oil as the bolts usually loosen up over time). Degree angle torque wrench if using stock replacement bolts since they are TTY.

I'd imagine a machine shop could check the pound rating on the springs. Either that or hit up a performance shop. Might even get lucky and have a part# or lb rating stamped into the spring somwhere. Might have to look close.