2004 Mustang GT GI-Joe 8-rib pulley on a Vortech
Just finished putting on an GI-Joe (BGGperformance.com) 8-rib pulley and belt kit on my 04 GT with Vortech V2-SQ blower. Works good, also see ...
2004 Mustang GT GI-Joe 8-rib - road test
Took the car out to see how much boost she make with the new 8-rib kit. Before the 8-rib it was making about 10psi, now its making between 12-13psi.