Hi, new member here, just picked up an mc18.
It has the swingarm from a 2J / 4J but the fairings look like R5K, so I'm not sure I know which model it is... I suspect the 2j though. Can I tell from the frame number?

The bike has some serious issues, but finding these in Canada are rare, so I picked it up when I got the chance. I'm going to need some real help with this one.

The biggest issue is that the engine is seized. Do I need to get the engine moving before I try to remove the barrels? I've done a couple of top ends on other two-strokes but never a seized one. Any advice would be great.

Here she is :