ok i just recieved my 505sus exhaust today from apexr1.com.... beautiful exhaust and apexr1 was great, quick delivery and all... i know its only 4 bolts to install the exhaust, but i have been reading up on it and some people have had fitment issues due to the fact that for some applications you need to use bolt "springs" in order to make sure the flanges dont get damaged because of the vibrations of the motor, urethane mounts, etc. i will be using kartboy urethane exhaust mounts and urethane motor mounts... any suggestions or a how to ???? i want to make sure i dont f up and do it right the first time.... thanks