When I was building my Dart 8+ years ago I was going nuts trying to figure out the wheel wells in these cars. I found an old racer from back in the day that new a lot about these cars and we talked. He said there were three main runs of the Darts and do to time and parts availability these were all unique in there own way. Shortly after the first run of Darts they found that with even the modifications done to the opening getting a slick in the was still tight. The bottom wheel opening ( let’s say 3 o’clock and 9 o’clock) where not modified, only the top sections were. On the second run of cars they moved the forward lip half way between the stock and where the inner tub started. The third mod they moved the opening all the was to the inner tub. This is what he told me and all the research at the time it made perfect sense.
Here is some photos on how I cut my own wheel well openings. View attachment 1715559494View attachment 1715559495View attachment 1715559496View attachment 1715559497View attachment 1715559498
