last reman I got from auto zone had 2 diff size pistons and a set of heads with diff valve size
I took it back and got another one after a
about it
they wanted to know why I removed the heads and looked
I said cause I am smart
the next one was a roller engine and was a lot better...the orignal was not a roller engine so it was kinda an upgrade
IMHO,look it over very close
the old saying of "you get what you pay for" works both ways...some times "you dont get what you pay for"
good luck with finding a good one