here's the scenerio: i have a slp on my gt. my dad likes it but i wanted to get something differnt for him for christmas. am i right in thinking the magnapacks will be similar? or how do they sound on a mach? this is hard because it's not mine. i know he wouldn't like the drone from flows. and i don't think the reg. magna's would be loud enough for him. his car is stock, he just loves the noise. i guess being that he is 59 and grew up in the muscle car time. plus nice rebate on parts shopper.