I have NP208 transfer case from Ford and a Chevy trucks for sale. The Chevy 208 is a 27 spline for a turbo 350. I also have some Turbo 350 and TH 400 cores, early 4L60, 4L60E, GM and ford transfer case cores, Powerglide cores, and Chevy GM GMC differentials too. Call Mike at 209-30four-4557. Check out the "more ads by this user" link. Thank you and God Bless.