It'll have its worked cut out to be better than '89 and '94. Those were the 2 best statistically (I think). '86, '01, '93, and some other 80s DLs were amazing too. But, this DL can be very good, if not great.
for my money, the 89 unit is the best we've had in terms of talent and depth - and more importantly, production. You had Tex and Maryland at tackle, Greg Mark( who had a load of sacks) and Willis Pegues at end. Jimmie Jones was the 3rd tackle off the bench(who had good NFL career) and Shane Curry(who was also drafted high in 1990). I've never seen a Dline that consistently played in the defensive backfield the way they did and was so disruptive.
94 was unreal too, Sapp(HOFamer and the most decorated college defender that season), Pat Riley( who was drafted in the 2nd rd) and two first round ends who had long NFL runs in Kennard Lang and Kenny Holmes. But they didn't have quite the depth IMO of 89 - although they had 'the Rock' lol
2002 to me, I thought going into that year was going to be a monster but honestly, was a bit underwhelming and was symbolic of the malaise of the Coker coaching regime. For much of that year they were just 'meh' and weren't nearly as dominant as they should have been and it had plenth of NFL guys(McDougle, Wilfork, Andrew Williams, Jamaal Green, Joseph)
I really think this unit under Coach Kool( the Emanuel Steward of Dline coaches) can be an abolute monster even with the losses of Gerald Willis and Courtel Jenkins. Honestly, I wouldn't trade this unit for any other in the country - only Clemson has a unit I'd think about