I dont consider gears bolt-on. IMO I think bolt-ons only apply to "bolting" things onto the motor. Do you guys agree or disagree?

 

a full bolt on is considrerd to be somtihng that u dont have to do any prep work to, or mod anythign else to fit for that indivigual part ... like lambo doors are a full bolt on system if u get the right kit .. so are certian supercahrgers ... cause all u have to do is bolt it on ... even thought u SHOULD change few other parts to make sure the supercharger works right .. it is still considered a botl on sice for that peice itself u dotn have to modifiy anythign