Even using the old compressed bumpers left no room for the nut. This problem was found before even fitting the spring over the shock, this problem is all about not having the correct length to accomodate necessary hardware at the top of the shock. Cutting the KYB rubber bumpers down may have solved the problem, but the shock was still going to be shorter than stock. Too bad, because I truly feel the KYB shocks are "best". The rebound and compression damping of the KYB is noticeably greater, at least when brand-new.
Gabriel G51181 with Moog CC228 spring gave me a much better handling and load-bearing car when compared to the stock shocks and, due to the stiffer spring, about an inch more height.
Stock-spec struts with NAPA 277-3452 springs up front added about the same and the car looks awesome. Not low and boring, not jacked up and cv-joint destroying, just a nice, aggressive, balanced stance.