I don't blame Dale Armstrong for a second when it came to that body. There were no real rules so to speak of, so every year he did a little more 'till they told him to quit. The wind tunnel tested 84 Tempo came out with the lips and turned in fenders, sealed windows etc. Then came the 85-86 tempo with more of the above and the 40" overhang, vortex generators and rear window louvers, then on to the 87 body.
It's hard to look at KB's 83 Mercury LN7 and think just 4 years later they would be running that Buick body.
The time of change for me, was the early/mid 90's. The Daytona/Avnegers were ok, The Cutlass (Lumina) was ok, the 93-98 Firebirds were OK, as well as the early Force/Winston/Smokin Joes/Fuelish Pleasure style Mustangs. It got a little carried away after that, but I don't mind it as much as some.