Well, if you're looking for more speed out of your vortex, there are a few ways to get your truck to haul it. Probably the most expensive and unpractical for the average Joe would be to buy a more powerful engine. Option two would be to find a different transmission to put into the car, obviously the transmission needs to fit. Also, putting bigger tires on it would make it slightly faster :P not noticeable but technically speaking it would be faster. Another option you could do is put a bigger pinion gear on the motor to transfer the power to the tranny. Those are the things I know of off the top of my head.