Thanks. Compared it to specs I could find of OEM part. Picked up a sleeve and felpro seal this time. Seems almost the same as the National seal but I'll take a micrometer to it here soon. I may also try setting the seal close to flush, maybe jb weld that little scratch or use RTV. It's at the top of the bore so I doubt it would leak too much anyways.

87 Mitsubishi Montero The old Beast

99 Montero with Winter Package No name yet