I bought a set from Stainless Cycle (I think) on eBay long ago. I recall there being two different outfits selling them. I only partially installed it before I sold it, but everything seemed to match up. I think the oil filter cover was a little weird though. They omit the long bolt because it's not easy to find, I believe.
In any case, use some anti-seize on each one to avoid problems. And read up on the stripped stock ones before you try removing them if you haven't already. An impact drive, butane torch (make sure you're not leaking fuel anywhere, don't ask me how I know), and/or penetrating oil are all good to have on hand for that job. Remove one and replace it to avoid your gasket seal coming loose and oil going everywhere.
On your next oil change, try swapping the stator screws out as well, as they only get more difficult as years go on. Be even more careful with them. I don't think they're included in the kits, but there was a post from a French fella on here who had the sizes down I believe.