you have to take off your fender to see them well. you might be able to look up there if you take your fender lining out. but it is inside the top left of the passenger side fender when you take it off. you can stick your hand up there and feel the lip. kinda hard to explain online. it is where all the panels meet together. maybe someone has pics.

87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.