You have to be a little careful about pistons these days. Many of the manufactureres are making what might be best called "universal rebuilder" pistons. They're usually short on the deck height, some of them quite a bit short. In the specs for the piston it should give the compression height, from center of wrist pin bore to deck of piston. I had to look around a bit to find full-height pistons for my 406.
Wally, those slugs you got are probably meant to give a zero deck on a unmachined block, what brand are they, mind if I ask? I'd like know who is doing this? Forewarned is forearmed... Was your block already decked to nominal zero?
[This message has been edited by Tom Mobley (edited 11-13-2002).]