318 LA rebuild after losing a valve seat

IMHO, the OP has what he has and it is better to help him get it running. At least he has a smaller cam to help with a lower CR.

But since I NEVER can resist running a CR computation (damn you LOL), I compute around 8:1 SCR, but IDK the piston PN.

Will be fun to see ^^^^^ what the actual cr numbers turn out to be. Lol . . .