it weighs 2750 with small block. four link and mustang front clip. run 9 to 11 lb. air. suspension good, no sag., launches and runs flat. problem is originally ran mid 11 @ 120 plus and ran out great. changed power and ran 10.4 @ 129, but had problem wheeling (almost went over) so I moved top bars on four link down a hole and scaled it. Put wheelie bars on, but were not installed properly and had to remove. The wheelies were a little more controllable, but then it started to wander real bad at 120 plus mph. One run it felt like the front end dropped violently, which was actually my rear lifting. I talked to a fellow who had the same car and had exactly the same thing happened. He installed a wing and picked up 6 mph with less rpm at the end. I have a ZZ572/620 hp I am installing. I intend are moving the four link bars back, put on proper wheelie bars and scaling it. With the new power I will be in the nines with 130 plus mph. Before I owned the car it blew over in Bakersfield about 6 years ago. Any suggestions will be greatly appreciated.