just installed those 2 parts and i love the way the car sounds, no rasp at all, deep and not loud what so ever. At idle its very quiet and when you get in the higher rpms its sounds nice and deep. Wish i did the hooker exhuast on my other camaro's. Next week im gonna install 4.10's and my lowering springs see how much more ill like the car after those 2 mods. Im seriously considering LT's but does anyone know a good exhuast shop that will install those without overcharging you here in southern cali somewhere in the L.A area. Thanks in advance.