Hi new to the forum to seek out knowledgeable honda people.

I have an 87 RS250 NF5 with some early looking nissin calipers. I need seals but they are discontinued and I wonder if there are any seals from an NSR of the same size. Caliper piston sizes are 27mm and 34mm 3xv seals do not work

Also what size flywheel puller does this use. I have a selection of pullers but none
of them fit.

Thanks!