I lifted the front of my 81 sub 3" with hd tuff country springs (removed the steering stab.). I was wondering if my stock front driveshaft will be able to handle the lift? I am swaping in a 14blt rear and will be getting an after-market driveshaft so it will be a true "1 ton" from the tcase back and I don't want to change the front dshaft untill I can get a dana60 and can make the front "1 ton". So any answers would be great. In case it maters my sub is a 81 k10 3" front lift, 4" rear lift, 350eng, 350tran., 208 (slipyoke) tcase and the front isn't locked.