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Reply #5 on: Jan 24, 2006, 10:08:44 PM »
ifs hubs are 27 spline sa hubs are 30 spline every thing is interchangable between the 2 except for the sliding collar that engages the hub
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89 ext cab sas with diamond +4 1/2" housing 30 spline longs and hub gears, hp elocker, six studs, arp studs in everything, taco rear with elocker. swaped out 22re for 3.4l supercharged, urd 2.0" pulley, urd fuel management, downey headers, flowmaster, cold air intake, marlin clutch that is straining to hold up