my budy has a lt450 with a pipe and cherry bomb and is putting another $1400.00 in to it and will not tell me what he is doing to it. i have the big 3 with the dmc also getting the motor stroked by kenz to a 6mm, h.c. piston, port worck and cams all on a stock bore also going +6 on the swing arm (07 rappy) he wants 3 races in the sand and 3 in the dirt. how fast are the lt450?