I may leave them. Just depends. Right now in 4hi fourth gear, she’s at about 4500 rpm’s at 55 if memory serves me right. It’s got 31s on it, may jump up to 37s if I can find the lift components.
Lift is easy on these old trucks, just leaf springs, about every 4WD lift kit company has one for this truck.
I have a 6" all spring Tuff Country to go on my 47 sitting on a 74 Ramcharger frame.