2001 YZ250F crank

Just picked up a beautiful looking 01 yz250f. It's got, for what I assume, a toast crank. It's locked up mostly. I say mostly because I can put it in gear and rock it back and forth and it moves a little before the wheel locks up and skids. I bought it for 400 bucks and figured I can get my money's worth out of it. I've never had a 4 stroke dirt bike so it'll be fun little project.

That being said, is there a one stop shop kit for a engine rebuild with the updated 2003 crank setup for this bike? I've done some searching around and I can find 2003 kits but those are for 2003 bikes originally. I know I have to get at least the flywheel for an 03 plus the kit. Is that all I need? Once again is there a good place to order this kit?

Here's a pic of it with my rm/x 250