Fenderwell cutting templates !

they are way different! The Hookers have 2-3 tubes per side that need the hole, the Husslers have all 4 tubes exiting "angel wing" style. Onve you get the Hookers in your faced with a huge gap where there is nothing and you can get away with about half that if you put them in before the motor. You can 'screw' them in and that hole will be a lot smaller.