I'd just try and modify the rear wheel openings of the LA Dart,detail it's body, use the trunk lid from the Petty dart, and only use the interior and chassis of the revell dart. Revell bodies suck.
Ya the wheel openings are going to be the tricky part. Front and back are hacked on the Petty Dart for the big tires. I had found an article online a long time ago where someone did the conversion. Will have to look for that to see what they did.
