A friend of mine just bought an unfinished '87 LX project car. I've been bribed with beer and pizza to help him sort it out. It has a 351w in it, but I don't know how to identify what year the engine is and what CC the heads are. It looks to be stock, so I'm hoping by figuring out the year of the engine, I can figure out the compression and type/duration of the cam. Where should I be looking on the block and heads?