I might be going mental here, but I seem to remember a while back reading something about Vento's haedgaskets or something that fit the 1.3/1.4 engine and marginally raised the compession ratio??

Am I going mad or is this true?? If so what are they etc etc?

GSF mk4 polo metal head gasket.

i didnt think you could use them on the non G40 models because of valve/piston contact as G40 pistons have more dish

Ah yes you are right, my bad forced induction engine

Can't use it on the 3F or ABD engine. Not just because of piston/valve contact but piston/cylinder head contact!