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On my 98' z i know how the regear in the rear goes down but what about the front IFS? Will 4.88's work on this crap
 

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I don't know anything about ifs diffs, but i have 4.88's in the front end of my '03, and it should be very similar if not exactly like your 98 diff. I believe you can fit up to 5.13's front and back
 
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