bighvyxb

i see the unorthodox racing one looks much better then the perrin. but the perrin says it only weights 1.6 lbs and has shaved 4 lbs. off and i cant find how much the unothodoxed one weights. also the perrin says it is NOT a underdrive pulley and the unothodoxed one im not sure about but it des say it doesn come with a belt. i DONT want a underdrive pulley. is there any noticible diffrence in the two (power wise) thanks

evosky

unorthodox is an underdrive.
perrin is just lightweight.
underdrive will give a more "power" but has more associated maintenance problems as the vehicle ages.

go with the perrin if you're only looking at these two. that's my two cents.

EasysBox

you wont feel the difference between an underdriven pulley and on that isnt on these cars, the gain is nominal and not worth the decrease in charging and air conditioning efficiency. go with the perrin.

hotbox05

perrin ftw

Rocket

I have had both on my xB. I would go with the Unorthodox. I have an extra if you want a good deal on one PM me!