GM / Chevrolet NP263, NP261XHD and NP261XHD Transfer Case Updated Mode Shift Fork. Your old shift fork will have a casting number of 28624 Part Numbers: 27756Free Lower 48 States Shipping. 1-All international buyers returning items must pay shipping cost and are non refundable. 2-Any fee's you paid for importing an item into your country will not be refund by us with any returned items. 4-Only a accept return in same conditions as we shipped it will be refunded.Thank you for you runderstanding and notice of our terms to international buyers.