New to m T- Bird

I just sold my LS1 Camaro to save money and got today a 95 T-BIRD 4.6.I like it but it kinda hesitates acceleration and sputters kinda similar to a clutch on a standard tranny dying while im driving at 55-65 mph.The dealer is honest and says he will do what ever is do to make the car run great.Not to mention I have a warranty on the car that i bought with the agreement.

http://www.autorevolution.com/inv/vehicle.cfm?vid=104573&refby=www.centraltxautos.com

here is the car

one thing i can say about it is that it has a badass stereo system.Kenwood deck 2 12-9's in the rear tweeter,aftermarket inr the back seat area and a 1000 watt amp.

I'm adding a custom hitch to my 95 t bird..