That really depends on what you consider rules in 3.5e.
Is it possible to find certain creatures in 3.5 who have the right mix of AC and bonuses to hit in order to use a lot of them without causing too big of a problem? Yes. Because AC, to hit bonus, and damage isn't directly tied to CR...you can find some that are in the range you want. Also, since CR is only a guideline, you could probably even use way lower than usual CR monsters and maximize their hitpoints while giving them better armor in order to create the numbers you want.
Ideally, you want creatures who have low hitpoints so the battle doesn't drag on and on. You want them to have an AC that can't be hit on a 2 by the fighter(or the other way around, enough hitpoints to survive a couple of hits by the fighter, but low AC to guarantee they are hit). You want them to have attack bonuses high enough to hit the PCs, but not be overwhelming. Meanwhile, you want them to have damage high enough that the players think twice about ignoring the monsters, but low enough that when 6 monsters attack the same character with a full attack that it won't kill him in one round.
Sure, all of this might be possible to find. Although, I think you'd probably have to settle for SOME of it and rely on luck to make sure you didn't have problems with the rest. And to be fair, if you use a lot of really weak monsters then most of the time the players aren't going to complain, they got to defeat the monsters and they weren't really in any risk of dying except by crits and the like. However, it takes a lot of searching and know how in order to get the exact kind of monster you want. And if you are writing a published adventure, it likely won't come out as a "valid" encounter.
It seems like a lot of work and effort to go through when 4e does all the work for you.