Holy run-on sentence and spelling errors Batman!
I'll try to answer as best as I can, but to be honest, your post is somewhat hard to read. Basically it sounds like you a vibration issue above 50mph. I would get underneath the vehicle and do a full inspection if you haven't already. Also, get the balancing checked on all four wheels. The majority of vibration issues at highway speeds I've seen were misbalanced wheels. If the car hit a curb like you suspect, it could have easily thrown one or more wheel weights.
2012 Kona Blue 3.7L V6:
Borla LT headers, O/R h-pipe, Borla S-types, 3.73 gears,
Steeda adjustable UCA w/ mount, BMR LCAs, Airaid CAI,
LCA Relocation brackets, AE driveshaft, GT 80mm TB,
Black 18x9/10 2010 GT500 Wheels w/ Nitto NT555s,
Eibach Sportline Springs/shocks & Koni STR.T Struts