If the subwoofer is mounted in place, facing the speaker backwards pushes the air back thus propelling the vehicle fwd. but you only get that additional power if you are playing music with heavy base and the back door is open <img src="/forums/images/graemlins/drunk.gif" alt="" /> all kidding aside, that's one clean ride. Props to the guy for putting the work and the money into it <img src="/forums/images/graemlins/kewl.gif" alt="" />

'88 Raider. 2.6L dead...2.4L swap in progress, AT, 33's, 2 bouncy seat,AC, CC, 2.25 exh, 2" Tbar, 2" BL, rear DB, rear LSD,4.90's, SW hubs,gen2 uca's, KYB shocks, snorkel, elec fan, MSD.

'99 chev k3500 crewcab
'15 Subaru XV
'03 BMW i325