Scott you are a lucky bugger yes that is (As Blue said) a model 1 cylinder and head.Bugger even I don't have a model 1 head yet,(My one must have been changed).Now I'm not sure how bad the rust is to,as to whether you will need to re-bore or not.Your best chance will be the acid I was telling you about. I'll have a look and see if I can find out what that acid was.It's basically is a de-oxidiser that basically just eats the rust.I think that is the best way that won't do any-more damage.You'll hear story's about soaking in oil and maybe even oil and diesel mixed together.Don't bother that's just one of those myths that just doesn't work.Tried it was just a waste of time.Might work on some things but not a stuck piston.Just try the best way without any-more damage than what has already been done.As that one is worth trying to save.Take the long road not the quick easy way as that may not work.Best of luck.Keep us posted.
