What size headgasket?

[EJ6]

Ok, Im currently doing a head swap for my LS, and when i pulled the head off the piston says pr4 and right below it says 0.8? what does 0.8 mean? is that std size pistons or OS? But i really wanna know which size headgasket if it is OS pistons. I'm swaping another LS head on. any info would help

Thanks

[3kgtdrvr]

i dont know much about hondas but i hope this helps if u have a b series
http://www.ff-squad.com/technet/cr-calculator.htm

im sure someone on here can like go all out on different options u have though