take the lid off both trucks and look....unless thats a newer model the trucks are the same...may have subtle differences here and there...but most parts will interchange....and if one is faster then the other it woul be by the clutchbell, engine or spur...all the other gears will be the same... parts might just be made out of different quality of materials

the sh .28 is a pretty good engine...I dont know what vtx sticks on their truggies....your friends may have a different engine then what it came with also....I dont know what kinda racing yall wanna do...but I'm here to tell ya...the fastest buggy doesnt always win...you can sock endless amounts of cash into an rc and still get your butt handed to you in a race against a cheap stock truck...alot of it depends on the driver