A quick update . I did a stance test with the tire / wheel combination.
Originally I was just going to use the plate chassis from the promo,,,,,, BAD idea no matter what I did the car sat to low .
Scraped that idea and pulled a lindberg chassis from the 64 Dodge kit. 8-3/4 rear axle and springs from the Revell 1967 GTX kit with some 1/8" riser blocks mounted to the spring ends to raise the rear of the car up, outer steel wheel halves from the Revell Thunderbolt, Inner wheel backs and tires from the parts box .
Wheels will be painted in a dull black , as will the chassis . Rear tires are kinda small looking,,,, but they scale out to be the correct 7" width this car would have had back then.
It's just sitting together to make sure I had the stance I am after.
Comments good AND bad welcome