TR6, Wrong Head Gasket?

["Michael Cline" <mcline@c4.com>]

I have a 1971 TR6 that according to the BMIHT Certificate it should have
engine # CC61371-E. The engine in the car is # CC82348UE (with head #
218227). I have been experiencing an overheating problem and wonder if I
have a 1971 head gasket in a later engine and would this cause overheating?
The head had the protruding ring around the combustion chamber. However,
that was machined off when the head was redone. It has the single exhaust
manifold.

Any comments? Suggestion?

Thanks

Mike Cline, Denver