You should spend more time reading, because this exact question was just asked in the FI section.

Summary:
No benefit. Ever.

Ever.

 

2 hours alone here yea... theres also gm full size, gmtruckclub and chevy forum. i read a lot. but again. it was a more or less idea. i talked about it with my bud yesterday because i was trying to tell him he will need a big air to water cooler if he really wants to mod his 95 tang with a built 460. he wants to do twin turbonetics 88's but, he still doesnt want to move the nose outward for intercooler but wants turbos. so i told him just put an intercooler in the passanger seat. but uh... yea i get the point. it was me messing around. i dunno. i think my idea was funnier but had more sense in it than the little whistle ebay has to offer to simulate a turbo sound. in fact... you guys ever have a wicked drinking party, take the beer boxes and make a custom body kit for a car? well... miller lite is cheap, and we had about 10 boxes... that made a huge wing, side skirts and subaru style hood scoop along with a folgers coffee can, drilled to the bumper, and put to the exhaust. it rattled and looked hilarious. then it rained and cardboard melts...

 

That explains the question