have measured the ports inlet 33mm x 53mm, exhaust 31.5mm x 51mm
The gaskets on the in and ex were alot bigger than the port size, I don't know
if this is the same as a vr4 ports. The valves are approx 30mm ex and 34mm in
Hope this helps
I've just bought a 95, it's 6 bolt. Haven't taken the head or manifolds off yet
but permaseal gaskets show that they use same inlet and exhaust gaskets
as the vr4