Quote Originally Posted by 02NavyBlue View Post
Well the kit you buy should come with the new injector o-rings, and everything you need to replace it. Other than that maybe replace the upper intake manifold with a dorman one since it's not prone to failure like the oem. You said you did coolant, the thermostat could be replaced if needed.
one of the big w-body parts suppliers, should sell you a big ass kit, that sells you everything you need to do a Lim job the right way. Including all the gaskets, coolent elbows, t-stat, silicone, VC gaskets etc.

Would be handy. Instead of trying to piece together all the gasket's and such you'll need to get the job done and forgetting something.