Ok I'm looking into building myself some wheelie bars and I need some help. I'm leaning toward a single wheel design because that would not interfere as much with the loading of the car on an open trailer. I also have a question about how long the bars should be? I'm leaning toward a length between 60" and 70". Any longer and I won't be able to get them into my 6' truck bed (if removed). And I'll be crowded for space in the garage (overall length). If the two wheel design is head and shoulders above the single wheel I go with that design. As of now the car is not wheelstanding but is carrying the wheels out about 60-80' about 6" off the ground. I'm increasing the HP level and will be adding a second stage. So I plan to be in the air a little longer and could be higher. The car is 4-link car so I can change the instant center pretty easily. Also what size tubing (OD and wall thickness) do you guys recommend? Looking for experienced feed back.