I'm not sure if I'm missing something here, but why won't a 22r head work on a laser block 22re? I know why it doesn't work the other way around because of the domed pistons which would contact the valves. Now I'm specifically talking about the 81-84 22r which have the same piston diameter and same overbore. I also know there is a difference of .190" between the two blocks, but the 22re pistons sit flush. I also know the 22r cylinder head is 3.290" tall while the 22re head is only 3.130", but even with that in mind all you'd need is a long timing chain.
Is there something I'm missing as to why everyone says you can't put a 22r head on a 22re?