jh6 or jh7 brakes?

Veikra

Member
Dec 19, 2011
260
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16
Montreal, Canada
I want to order parts online, but I dont have my RPO stickers for my truck.

Truck is a 2005 sierra cclbdrw with 6.6/allison. (lly)

Should I go with the jh6 or jh7. What are the differences? I think the rear dually brakes arent the same, but im ordering for the fronts.