The 8.8 does require minor welding (cheap) the Dana 44 will require more fabrication.
Yes, you still need to re-gear. You just dont want to spend money on your crappy rear axle, this will provide you added strength and the gearing will help restore your power.
I had 32's (measured 33's) swampers with my 4.88s for a bit and could cruise 70mph and had 5th gear back, however its rather flat here. got roughly 16-17mpg on a trip from OC-NJ Pines at around 70mph
95YJ 2.5 AX5 NP231 HP30 4.88 and aussie, 8.8 4.88 mini spool, 4" RC, 1.5" Boom shackles, 1" BL, 1" rear stretch, 36 12.5 15 TSL SX's, trimmed front fenders, bedlined exterior, comp cut coming soon!
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