The 1996-97 Bulls maybe could have hung with GS.
Jordan
Pippen
Kerr
Harper
Kukoc
Rodman
Longley
That 7-man rotation. I'd go basically with Jordan, Pippen, Harper, Kukoc, and Rodman.
Jordan on Curry
Harper on Thompson
Pippen on Durant (or maybe Rodman on Durant and Pippen on Green)
Rodman on Green
Kukoc on Iguodala
Kerr on whomever is left I guess - that's not a good situation for Chi
If Zaza is in, you can go with Longley to match up with him, though I'm sure GS would have killed him on the P&R.
Those Bulls had 3 all-time great defenders in Jordan, Pippen, and Rodman, who could all defend players of ANY era, from like 6'3" guys all the way to guys 6'9".
Offensively, while GS clearly had better 3-point shooters, Chicago's shooters weren't bad.
Jordan - .374
Pippen - .368
Kerr - .464
Kukoc - .331
Harper - .362
Put that 5 on the floor and you have really good spacing offensively. You lose Rodman's defense, of course, so that's a problem when GS has the ball. Plus, who guards Jordan? I guess Durant with his length? Thompson (6'7") is actually taller than Jordan (6'6") was, or maybe you go with Draymond on Jordan, but I don't see either of those guys being able to handle MJ. Can't help off Kerr, given his 46% three point shooting. Harper was solid enough offensively and he could post up Curry if that was the matchup (Curry probably stayed with Kerr). Pippen would be a very tough matchup as well. Let's not get too caught up in the moment - Jordan and Pippen were both all-time great NBA players who were also ridiculously athletic. I love Klay but he's nowhere near the level of either of those guys; neither is Green.
So that would have been, if we had a time machine, an incredible game, but you guys are right - the rule differences really make today's basketball a different game altogether. Imagine if you could bump and ride players like you could in the heady days of the Bulls and Pistons? I think that would give Durant and Curry major problems.
Fun thought experiment anyway.