I don't know that it would cost you less than $1200 to fix yours. The compression on the other cyl's looked pretty good. How do you know the other engine is good? You can get a 2F from cruiserparts.net for $1000. I siezed my engine and immediatley thought rebuild and I was able to fix it fairley easily. Your engine still runs. What I would do is get a set of opinions on what you should do, most of it is work you should be able to do.
Not sure if you can have your existing Pistons reworked or if you can swap them out or any matching machining is required. You might be able to fix the engine without taking it out of the rig. Your crank should be OK. I think if you drop the oil pan and remove the rod bearing, you can pull the piston out. Not 100% sure, But David Dearborn or others could tell you. If it is as simple as a litlle machinmg on the head and pistons, then it shouldn't be too bad or too hard or more than $500.
Good Luck!
Not sure if you can have your existing Pistons reworked or if you can swap them out or any matching machining is required. You might be able to fix the engine without taking it out of the rig. Your crank should be OK. I think if you drop the oil pan and remove the rod bearing, you can pull the piston out. Not 100% sure, But David Dearborn or others could tell you. If it is as simple as a litlle machinmg on the head and pistons, then it shouldn't be too bad or too hard or more than $500.
Good Luck!