Oil filter mounting????????

Good evening everyone,

My 90 degree filter adapter was leaking so I removed and was going to replace with a straight on mount using double male fitting and plate with new gasket.

The problem I encountered is the plate is contacting the block at bolt area before the gasket sealing surface comes into contact with block. The engine I am putting this onto is a 91 roller cam LA block, the block I removed it from is an 89 roller cam LA block. On the 91 block the center area where bolt goes through sticks out past gasket suraface, on 89 the two surfaces are flush. Any ideas? We're there different plates on different years?