I replaced the stock fp w/ a single Walbro 255 over a year ago and am still running it that way(it still goes lean w/ the 181). I did the return style setup and FPR and it helped the top end lean condition but it was too rich down low. The NW/Waldig method looks interesting so im waiting on a price and a few more reviews. Personally to this day i still think my car (and GangMembers) needs bigger injectors.

There was a guy at the Dallas Eurocharged tuning session running stacked pullies, sl55 pump and bigger injectors. He claims he never ran lean but ive noticed over the years some people say their afrs are fine then later run lean under heavy loads.