That modern look....

I'd venture to say that guys who are sticking with mostly stock suspension components are also sticking to 14 and 15 inch wheels, because it has to take a ton of money to make those 17's and bigger work. You don't just slap 17's or bigger on a 40 year old torsion bar mopar front end, and you especially don't try that with air bags on an old suspension, because the minute you pump them up your alignment specs go out the window.
There's also something to be said for the size of the factory wheel opening in relation to the size of the wheel and tire. Our older rides were never designed with 17's in mind. The proportions just look out of whack.
And as far as the styling of the newer wheels on older iron? Most are totally garish, no matter what ride you put them on, old or new. Lattice or snow flake designs just look stupid, and you have to paint them black just to hide their ugliness. Never mind trying to clean in between all those nooks and crannies.

Sometimes too much is just that - too much.

You can definitely slap them on an old mopar and they will fit just fine. Make sure your backspacing is correct and the tire height is within spec and its a simple swap. People do it every day and have no issues with them.

Confusedcuda runs 17's on stock 10" drums and 4" bolt pattern and has for 7 years now with no issues. I just put 17's on my wifes cuda and it has a stock suspension as well.

Since you are staying within spec on the tire height then the wheels and tires will fit the opening just as they did 40 years ago. If you want to go bigger you always can. My 18's fit in back with ZERO modifications to the wheel well and they DO NOT RUB....no matter what I do.
I changed my front suspension to an RMS so I cannot argue that point but once again if the tire height and bs are spec then no problems.

With regards to the airbag comment....the alignment is done with the bags inflated and set at ride height. That means whenever you are sitting at ride height your alignment will be in spec. The only time it goes out of whack is when you are slammed....and your not driving when its slammed.