You should have a badge on the tailgate that tells you, if not:
XL, stripdown, body painted rear pillars, manual windows/locks. This may not apply to all XL's, but it gives you the idea. 2dr or 4dr
XLT, velour or leather, black rear pillars, chrome bumpers and trim, power W/L's. 2dr or 4dr
Sport, Black bumpers/trim, full power. 2dr
Eddie Buaer, leather seats, full power,, chrome with body painted bumper plastic, usually two tone paint. 2dr or 4dr.
Limited, limited rims, limited grill and headlight doors and bumper, leather, woodgrain on some, premium sound w/sub. 4dr
Anybody want to add/edit to the list?