Rims and tires
 

What is the best type of rims and rims size for a 1983 monte carlo with out messing with the suspension but will still look good

Welcome to the forum!! :)
This link will give you a place to start looking.
Click==> 1983 Chevrolet Monte Carlo Rims, 1983 Chevrolet Monte Carlo Wheels at OriginalWheels.com

My personal choices would be

15 X 7 for the front and 15 X 10 for the back with 295/50/15's BF Goodrich white letter tires (on the rear only) :) you will need to raise the back end up with either spring spacers or air shocks though but they aren't really that expensive especially if you can find used rims in good condition as the savings vs new will pay for the suspension upgrade easily, and your car will launch better with a stiffer suspension