my powerdyne is the 8 pound variety... i have an 11# pulley i bought on an impulse. but in reality, i don't think it wise to install it. best gas i can get out here (other than $10/gal race fuel at the track) is 91 octane. the powerdyne is no vortech or p1sc, but the price was right at $2400 when i bought it back in '99. car runs real strong for a non-pi. i have a pi intake and cams i just got off e-bay...$120 for both shipped, not bad! just trying to organize the install which i will do myself. stupid ford dealer here in vegas says the coolant tube and nipple are discontinued.:dunno: my bassani "optimum length" ceramic coated stainless headers are still in 50 pieces in the box. i thought they would come mostly assembled...they didn't. just waiting for some funds for a shop to install those, motor needs to be lifted and a whole bunch other PITA stuff. i wanna do the headers, fluidyne, 180 t stat, pi intake/cams, and 30# injectors all at same time. anyway, i got carried away. love talking stangs i guess. nice talking w/ ya.