From http://www.grandprixforums.net/commo...ets-39796.html

Fel Pro
MS98014T........Aluminum LIM gaskets..............................$51.79
ES70599...........Fuel Injector O-rings (need 3)....................$1.91
VS50465R.........Valve Covers (L67) w/grommets................$40.79
MS95744...........Plenum (SC to LIM) gasket w/rings (L67).....$8.43
61024..............Throttle Body gasket (L67)........................$3.52
47065..............Coolant elbow.........................................$4.0 0
Permatex Ultra Copper RTV - works for every fluid in our cars except supercharger - for corners of LIM
Permatex ptfe based pipe sealant for LIM bolts.
An oil change and gallon or two of concentrated coolant.
Cleaning supplies - Brake cleaner and gasket scraping.
Can of TB cleaner

Easy way to tell if you need to do this job, look between the head and LIM, got a black gasket? If yes..then your gasket will look bad when you get in there.