Sorry I can't help with Napa part numbers, but maybe this will help you. With your suspension if you ordered DT shocks from us...... the compressed measurement for the front shocks would be 15.50"; the compressed measurement for the rear shocks would be 17". Maybe Napa can work off these numbers for the shocks you are looking for.
Hey I got some shocks form NAPA that are 24" long when extended, the ride is good! THe part numbers are 94080 for the front and 94004 for the rear. Total cost for them here in N.C. are $79.46. I also got some longer brake lines from NAPA and the part numbers are 36967(front) and 38673(rear). Cost was $24 for the rear and $20 for the front. I only got them because I didn't wan't to wait for Shipping. If you have any Questions just e-mail me and I'll try to answer them.