Me and my Brother have been throwing the idea around of getting a shifter-cart for some fun on the weekends. Does anyone have one and what do you think? we were looking for something around $3,000 to play around with. Fortunately my brother and his boss are both mechanics so we can piece it together and build it ourselves if we decide to go that route. Any good sites we should know of or anything we should stay away from? brands ...etc.