Can 17 inch rims fit on a non-widebody speedster?

I was wondering if 17 inch rims can fit a non-widebody speedster?

Also a general tire question. If I have a rim custom made 17X5 for the front do they make tires for it? How does the "road" side of the tire width work? If the tire is 215/40 x 17 will it fit a 17X5 inch rim?

I think a 17X7 more normal sized rim and tire will fit the back but I know the front section of the speedster is not as wide or deep.
Thanks

I think you're gonna have a problem.
The front will probably rub -- if you can even steer the wheels without rubbing on the footwell -- with the two and ten clock positions on your front fender.
I also think your back wheels are going to require very short sidewalls for the height clearance, and you're probably going to exceed the width dimensions.
If you're not sure, measure the overall height of your wheel and tire combo now, and stay with a combination that is the same or less.
As far as width, you could jack the car, put a five-inch (or however wide) dowel onto the tire with some duct tape, and spin the tire until you either clear the fender and footwell or hear the dowel hit metal or fiberglass.
Steer the wheel fully both ways while manually rotating it and play with the dowel's center-point and length, and that'll help you figure out the max clearance width AND the offset you'll need in a rim. You can use the same method for the rear.
I did that before we shortened my axles and beam, and again after.
Does that help or hinder?

Wow its an honor to get a reply from a car builder like yourself Cory. Even with your custom frame whats the largest tire you could fit?

I was thinking of getting custom made iforged rims but the smallest size they make them in are 15X6, but I really wanted to put a 17X7 in there with low pro tires. I know it can be done height wise with the low pros, its just the side to side turning thats the problem.

Thanks again for your reply. I have always loved your ride with the roll bars and cool frame,
Shawn