I agree with Dan.
I'm not arguing the financial aspect of the decision, I'm sure there are bigger brains than mine making the marketing decisions at Revell. I'm just saying it sure would have been nice to have the option of a stock version.
Just think of all the variations a reasonably clever modeler could build from one single kit:
Stock, either factory fresh/restored or old and weathered, rat rod, vintage salt flats car, backyard hot rod, mild custom, hi-boy, street rod, low-budget drag car, etc. The possibilities would have been endless... if only the parts to build a stock version had been included.