The bids are already around $163K, with the Paul Junior Designs bike garnering a high bid of $112K, and the Orange County Choppers bike $51K, easily showing whose custom is more appealing to the public.The bidding will continue until 5:50 p.m. Sunday, July 31, with all the proceeds from the bikes going to CureDuchenne, the national non-profit dedicated to finding a cure for Duchenne, the most progressive and lethal form of muscular dystrophy.This American Chopper auction proceeds will then be added to the more than $500K that Cadillac has raised for Cure Duchenne since last September.While the American Chopper bikes are doing much for society, the bidding is also showing which Teutul is winning the contest for a better Cadillac-themed bike – either Paul Teutul Jr. of Paul Junior Designs (PJD), or Paul Teutul Senior of Orange County Choppers.Paul Tetul Senior and his Orange County Chopper crew used a 160-hp, S&S engine to power their Cadillac bike, which features an angular frame, handlebars and lighting, Brembo brakes and a centered-rear exhaust modeled off a CTS Coupe.The Orange County Choppers bike also features other Cadillac design cues, including a V-Series mesh tank area (containing a nitrous-oxide system), V-series badges and a CTS clock on the center tank.Paul Teutul Sr. (Orange County Choppers) says: “The wheels, lights, grilles are identical to the car. Because the CTS-V has a 560-hp supercharged engine, we made the air cleaner into a ‘super-charged’ intake and added fuel injection.”Paul Teutul Jr.’s bike is vastly different, featuring more curves similiar to a cadillac, with black diamond paint and a Cadillac V-Series emblem. Paul Junior Designs’ machine features a Crazy Horse motor, air suspension, large yellow V-inspired brake calipers, and taillights and trunk badges from a CTS sedan on the wide rear fender.Paul Teutul Jr. (Paul Junior Designs) says: “When we were asked to build a bike for Cadillac, we immediately gravitated toward the CTS-V. It’s exactly what we do with motorcycles. The CTS-V has the lines, the power, the looks, so a lot of our design cues were pulled from the CTS-V.”Paul Jr.’s cycle is the favorite among fans with more than 141,250 members joining his Facebook page and bids for his chopper topping $112,000. Bids for Paul Sr.’s chopper have topped $51,000 with almost 10,000 Facebook members.To check out minute-by-minute coverage of the American Chopper: Senior Vs. Junior Cadillac-themed bike build, click here.