2.5l stock gasket heads chamber sizes?

[coffeeguy]

What are the smallest uncut chamber sizes for the older 2.5 heads using head gaskets?
Did the early 90,s 2.0 l motors run a head with a smaller chamber that can be used on a 2.5 like the 80's 2.0l to 2.4l?
Asking as local race rules won't allow cut heads.

[mach351]

Pretty sure there was a 18787-c2 head that was near 34-35cc’s. Would’ve been on mid 90’s dowel fat block 2.0 150’s. Usually gives 145-150psi with a thin gasket on a 200. Not all 18787c2 heads seem to have that chamber tho so you should check cc.