nope, still a shitty little 6.5" diff, go for a R&D 7" unit at the very least, I have a thinkwall 909 diff and am worried about breaking that..... Doug stirling cracked his thickwall casing in half ... Launching a 4x4 cos with big power will mean spending 10k+ at least on the tranny...... or it's wreck and repair on the cheaper stuff, simple as. Good as the Mullet boxes are, the mainshaft will always be a problem as you have to work your upgrades into the original dimensions.