No..the 72-73 piston has a compression height of 1.74....the 68-71 piston has a compression height of 1.84......so your 1.82 compression height is a little less ,...but without knowing the deck height on the block we are all guessing...
Yes, all my numbers assume that the block has not ever been decked. If the old pistons are stock, then then it is a fair assumption that the deck is stock.
