depends on what went bad on the sc engine, if it chipped a piston the head is pooched, or a blown rod can hurt the head too. if it was over heated bad, could have cracked a head.

you need the heads, lim and blower and all the sc belt accessories, balancer idler tensioner. and new head bolts. or buy studs, bolts are way cheaper tho. while the engines apart and out of the car, clean it and re gasket everything. good time to paint it as well if you care to.