im not a fan of them as im not a fan of the never body style front end swaps. i dont like things hanging lower the the body lines of the vehicle anything past that m no body kits, valences, etc. the valence doesnt serve much of a purpose on gmt400s where as on other cars like my camaro is was beneficial to cooling the engine.
Actually iirc the valence was designed to direct air away from the front suspension components to reduce drag
Sent from somewhere in MN