Got a 200 block from my 4wd which as got wills ring cut into the top these rings are gas filled been looking for years to find some which is the right diameter but I couldn't find any so my question is best place to get the block surface skimed to get rid of the Grove it's a genuine 200 block never been cooked I have ad it for a long time with the caps just taking up space all the bores are greased up don't kno if this is worded right