Having a lot of trouble finding someone at superior to talk to about an engine for my RV-7. I'm interested in an O-360 carbureted with a LSE mini crankmount ignition system in place of one of the mags. From everything I've seen, I can do it less expensively with a superior XP-360, with the whole system delivered installed, than ordering an engine from Van's and separately purchasing the LSI kit and installing it myself. What I'm not clear on is whether the XP-360 will be compatible with the Van's finishing kit and FF kit. I assume the finishing kit would probably not be an problem. But I would like to know if some items like the exhaust system, air box, throttle/mix/prop brackets and cables, and alternator will be more complicated because I can't use the Van's-supplied materials. Does anyone have experience with the XP-360? Is it any more trouble to finish an RV with a superior engine?