Bob can I come visit till spring?It warmed up another 25 degrees since this morning so I went out to measure the track but all I found was a hump in the snow where I last saw the truck. I'll see if I can find some Fiero specs online or in one of my shop manuals. The stock Fiero wheels fit within the 40 front fenders. They have a negative offset. If you have a wider car you could make it wider with a different offset on custom wheels.

Joker I didn't add any reinforcement to the Fiero front crossmember. It's very strong the way it is. It's already boxed on the bottom. I forget what the maximum width for the frame is and I can't get at it right now.

Here's a picture of my junk yard dog Ralph helping me carry the frame into the garage for the finish welding. He took the light end. Ralph passed away about a year ago. Some say I worked him too hard. Sure do miss that ol dog.
AL