Hello,
I am sorting through a '55 KH basket case, in which a lot of the parts are turning out to be early Sportster. Comparing the tappets and guides with a lot of websites, appears that the tappet guides are correct for the KH (though two are damaged and will need replacement). With the tappets, I am guessing that three of them are KH and one is a KK,KHK,KR. This one also had a shorter adjustment screw. The tappets are all in pretty good shape and all are the same length. I am guessing that I can use them all if I get a longer screw for the odd-ball lifter.
If I am missing something I would appreciate anyone correcting me.
p.s. If this virus curse has a (very, very) thin silver lining it is that it gives time to devote to sorting out all the boxes and milk crates of parts.