Do you want to win a Free Rev-X Tuning Device from VMP Performance?! Place your guesses below in the comments on how much this GT500 dyno'd with the all new VMP Gen3R! Entries must be submitted by 11:59 pm, Sunday, June 23rd. Winner will be announced through VMP's social media, Monday, June 24th. The first person to guess closest to the RWHP number without going over will win! (Price is Right rules) Employees of VMP and owner of the car are not eligible to win. Contest is for REV-X device with S