scrappie

I know of a 70 442 hdtp, real plain jane, auto, bench seat, cloth, next to no options. Car is pretty rotten from sitting for at least the last 10 yrs. I looked at it yrs ago and have been bugging the guy to sell it to me but he just would rather let it disintegrate into the dirt. I noticed the all original drivetrain years ago and also the carb was a 7040256. Am I correct in thinking the carb is a 70 w-30 4spd. carb/ and if so how much is the carb worth these days?

Thanks