Okay I'm rebuilding my 1995 Mercruiser 3.0LX, sent the block, head and manifold to get checked and cleaned. Changed valve seals, main bearings, piston rings and bearings, the camshaft and bearings look new so I didn't touch them. (Bought the boat in July 2009). I mounted the crankshaft, which I also sent to get checked, pistons, oil pump and oil pan. When I checked the head bolts, some of them are corroded. My question is can I use bolts from a car motor or do they have to be from a boat? I use the boat in salt water.