Bought an 89 Ultra Classic that was a factory 1340 but has the whole screaming eagle top end installed. Trying to find out specs and displacement for this kit but not having much luck. Anyone know what size kits were available for this motor?

 

They did not increase the displacement with those S/E kits.
Cams, heads, pistons, ignition, carb, was the extent of any offerings.
Scott

 

As Scott points out, it is still a 1340. The Evos are not as readily increased in capacity as later twincams are, also there were far fewer Harleys made and sold back then, so modifying them wasn't done on the same industrial scale as it is nowadays.