I am still trying to break into the 12s in the quarter-mile and considering a few reasonably priced bolt-on mods to help attain the goal. Who has this P5155177 Mopar Performance Transmission Control Module? Is it worth the money and will it gain me another tenth or two? Also, has anyone bought any parts from www.ONESTOPOEM.com? They have one listed there for an incredibly cheap price and was apprehensive about making the purchase.