I dont want to go against the "do it right the first time crowd"
Oh of course I'm with MrOld. In fact I suggest tapping all the openings and then installing some screw-in core plugs.

Of course you would have to have the engine pulled and driven to the machine shop but $500 later you know you would have "Done it right." Hey! even better, take it to a welder and get the plugs welded in there. Now that's doing it right.
Whatever you do,
don't try anything yourself. Fixing your own car is like operating on your own child - you wouldn't do that, would you? ALWAYS consult and depend on the professionals, the best machine shops and the very best equipment, tools and parts. This is your child we are talking about. NEVER get information from books, friends, and especially this forum and they try something on your own. These people have no idea and are here just for the money. Only disaster awaits fool DIY'ers
Hopefully that 'bout covers the way some people feel about fixing up old Galaxies

