well man, i have lots of titanium so it made my truck lighter and then i have bow ties that are way lighter than stock my truck weighed 9.somethin pounds untill i put my sh28 in it and now its about 11 pounds ok and the stock savage was geared 15, 52 and mine is in a low gear of 18, 48 and my truck pops wheelies like nothing. like i said i have never radaed it and my truck has lots of upgradesa nd none of them except the chassis braces are aluminum. I know that the mammoth was clocked at 52mph. i am about there and sometimes stay at the same speed ok so i know my truck goes WAY over 40mph to catch a 52mph truck. get a grip man.