Hi - I just purchased an 07 Shelby GT. I guess this would be a 350. I am wondering if there are any "issues" or problems with this model? What is the "actual" horsepower of the engine? I am told it is more than listed? What oil would you recommend? Anything to watch out for on the car? What gas mileage can I expect on highway? It appears to have some upgrades: GT intake and valve covers, cobra emblem on box,chrome shock tower covers,shelby dip stick,cobra 12 v outlet cover emblem,shaker 1000, chrome park brake handle,carrol Shelby signature on sun visor/vanity, diff heater control knobs, etc. What can you tell me about that? Thanks!!! Gary
