I don't have stripped splines on my front driveshaft but found this spacer on eBay from Russia. It looks well machined and pushes splines 15mm further into the Transfer Case.

I only found 1 feedback and it was positive. Has anyone here tried this $31 spacer ($41 shipped in 1.5 mths)?

https://www.ebay.com/i/253655468495?...SABEgK1YfD_BwE

ThunderX
2001 E53 4.4 Sport
Ti Silver