Has anyone regeared a 392 yet?

[Laserflorida]

Have 37's on a 392. want to regear to 4.88's but the experienced jeep upgrade garage is having difficulty figuring out correct parts. They spoke with dana spicer but still unsure. Very helpful guys at Rubitrux suggested
Wrangler Rubicon 392 Driveline, Axle Shafts & Gears | RubiTrux
but my guys were still asking specifically about master overhaul kit or pinion overhaul kit

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