The 420A's that came with the Eclipse are 235's, Neons are 190's I believe. FRom what I've been reading on the 2GNT board, anything higher than a 310, and you will need a SAFC to fine tune it. The ECU can't handle anything higher than a 310, going higher without an SAFC, and he's gonna have a hard time trying to get that thing to idle. There are far more knowledgeable people than me on the 2gnt board regarding this subject, I suggest he ask the Jedi Council over there.
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Olympus Evolt E-510, E-520, E-30 x 2
11-22mm f/2.8-3.5 Zuiko Digital
14-54mm f/2.8-3.5 Zuiko Digital
35-100mm f/2 Zuiko Digital
50-200mm f/2.8-3.5 ED SWD Zuiko Digital
Cybersync wireless trigger
FL-36R, FL-50R, Metz-48, and Vivitar 285HV x 3