Jason only built the engine.
I'll have Jason contact the customer and see if he can send us some pics to post.
Your clutch basket 21200-26C01 is a one year only set up and I don't have any...
Ebay is out as well.
If you have your basket and it has worn ears you can always file the tangs down.
True, it will wear faster the next time but at least you can ride it.
Or, run the search 1988 rm250 clutch basket on eBay... Here is a link:
https://www.ebay.com/sch/i.html?_from=R ... =0&_sop=15
After you get there, click on "Save this Search"
eBay will then send you a email any time a new one pops up
Or, get a basket rebuild kit.
This one is from Australia but I have used that same kit for other bikes and they work very well.
https://www.ebay.com/itm/1988-1992-Suzu ... itleDesc=0