Urgent: I have a broken/locked up rear shock and I need to run to Sears today and get new ones. What shocks (Monroe?) will they have that will work on my 3-4 droped 1997 extended cab F150? I did a ton of searches but couldn't find anything w/o having to order it.

Does anyone have a P/N for me to get I need to get this fixed today?????

Thank You for any help!!!
Regards
Kevin