A body wheel and tire sizes.

Ok so I'm new to all of this. I recently got a 67 Dart and am currently working to get it on the road. I am looking for new rims to accommodate 16" tires. They have a relatively low profile so hitting the wells isn't an issue. I don't have a lot of dough for the project just yet, but I need it as a runner. The rims that the tires are on now is from a 98 Cavalier (piece of crap I'm getting rid of...)that happens to have the same bolt pattern as the Dart, the problem to just transfer them over is the offset. Does anybody know a company in Canada that may sell rims for older cars and that has a reference/catalogue to solve the sizing issue? Or better yet does anybody know of a car model that has the same bolt pattern (5x4.5) that is current enough (1983+) that I could reference some simple steel rims for the 16" tires? Thanks for the help guys, love the site!