Hi I am new to this site I don’t understand how to post just yet, I have a 1993 KX 250 that I was restoring, in the meantime I found online a 1993 KX 250 frame that was street legal so I purchased it, Checking the title and Vin making sure it’s at 1993 KX 250 I purchased it, when I went to put the engine in the mounts were different there are two different Vin numbers, after a little research I found there is an aluminum Premier frame and there is a steel perimeter frame but cannot find any difference in the pictures of these bikes, I did not know they even made a different frame, I have no idea with the F bike would look like, but my engine definitely does not fit in the Vin number shown that I added at the -F at the end of the vin to show the difference, I searched both bins on the kawasaki website and they both come up 1993 KX 250, can anyone please help thanks Joe 856-906-3013 Please see the Vin numbers attached JKAKXMJ17PA007920-J,
JKAKXRJ14PA007841-F,