205 pinto anybody seen this before??

hi guys when we pulled out my 205 pinto from a early sierra (1983 2.0 auto on carb) we took the head off it & there was somthing diffrent to the other pintos ive had over the years...the piston bores are the same size as the head gasket!! on all the others ive had the has been a little room from the edge of the bore to the inside of the gasket ring??...sombody told me there was a few pintos made like this & that they where classed as a early cassie lump!? any ideas. cheers Reg.

Measure the bore, it can have been modified by a previous owner. I have never heard that Ford made a special pinto as you described

ok mate, will post back in a few days with some pic's too!