RE: '70 challenger western sport special, rare?
Your car was a 318 2bbl automatic from the factory.
E44 = 318 2 barrel
D31 = A904 3spd auto trans
Your original color was also B3 light blue metallic, not B5. According to the info I have, the WSS A91 package was only available on LA produced cars. It is at least an unusual oddity, being a Hamtramk produced car with that option. After returning from Carlisle and seeing the prices on cars there, E-bodies especially, you got a real steal there for 500 bucks. It's easily worth 7-8K as it sits, in today's market.