would the Chevy 3.38 gearset even work in a GMC rear? ... I thought the 5-9 GMCs had a factory 3.07 rear gear

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics