I decided to do a dc sport 4-2-1 header with 1 piece( i think thats the better one anyway) but i was wondering for a catback i want either a racing medalion or a hks hyper exhaust. both these are very very straight exhaust where the muffler is actually slanted and it takes 30% off my stock exhaust and i have like a 30 pounds welded muffler on there lol . any experience with these? thanks