i have a 83 nissan pickup with the z24 motor and i was wonder if i got more power out of it and cooler sound by messing with the piping. i was thinking just removing the cat then i was think removing the muffer then i thought why not remove both??? could someone help me get strighted out...im turning my truck into a oldskool corr truck that i could use as a daily driver and my z24 never failed me once and i have had it for about 5 years now so it was a easy choice for me to pick it.