you can get a front mount without removing your crash bar - theyre not exclusive to one another.
if i remember - either your bumper or your crash bar will have to be trimmed if your core size is taller than ~6-6.5". trimming your crash bar probably wont be the end of the world, though i still wouldnt do it.
a core over ~10-11" means you have to remove the crash bar all together so the bottom of the core still clear the ground. this includes the perrin kit and the turbolife - both of which include replacement bars which are not NHTSA approved in any sense of the word, and where insurance problems are MUCH more likely to occur in the event you make a claim... the bar is supplied just so you have something to hang the IC on.
if you go with something like a 5.5" core, you dont have to trim the bumper (generally) or the crash bar, and youll see PLENTY of gain assuming you dont want to run 25+ psi.
if i remember - either your bumper or your crash bar will have to be trimmed if your core size is taller than ~6-6.5". trimming your crash bar probably wont be the end of the world, though i still wouldnt do it.
a core over ~10-11" means you have to remove the crash bar all together so the bottom of the core still clear the ground. this includes the perrin kit and the turbolife - both of which include replacement bars which are not NHTSA approved in any sense of the word, and where insurance problems are MUCH more likely to occur in the event you make a claim... the bar is supplied just so you have something to hang the IC on.
if you go with something like a 5.5" core, you dont have to trim the bumper (generally) or the crash bar, and youll see PLENTY of gain assuming you dont want to run 25+ psi.