The safety sticker has codes for axle size, GVWR, GVCR, trim and paint levels. The important ones are the AXLE and TRANS codes which tell you what rear axle and gear ratio came stock, and whether it has the limited slip option. The TRANS code will ID your transmission. It's ofgten easier to post the codes than to search for a "de-coder" on the wb, as some are innaccurate. The trans code for your 93 with E4OD should be "E", and the rear Ford 8.8" axle will most likely be "19" for open, 3.55:1 gears; or "H9" for 3.55 with the L/S. As far as the VIN, the only real vital character is the 8th one, which codes for the engine CID. IF you post the VIN #, make the last 5 digits "x's", as those are the build sequence numbers and unique to your truck. JSM84