Being an old man, and a Chevy Guy, I remember when the 400 trucks first came out. I wanted one SO BAD. It only took me 11 years to get my first one. I bought my 93 WT in 99, and my 97 Silverado in 2002. Sold the 93 in 2009, and still drive the 97 everyday. I followed these trucks very close. At first, the Silverados had the 4 headlight set up. It didnt take long before our local Chevy dealer started ordering all of there trucks with the Silverado grills. Only WTs and some 2500 -3500 trucks didnt have the Silverado grills, on there lot. IDK if this was a local thing, or something that GM offered company wide. I have never been good with time lines, so what years all of this took place, IDK, I went to the local dealer quit a bit back then. I do remember talking and asking about the difference between the WT, and other packages. I also remember when the 95s came out, and the salesman walking around the lot with me, call out what truck was what between the 95+ and the 94 back. I ask how He could tell without opening the door. Thats when He pointed to the dash. Square VS round.