They're trying. Take a look at the SRT Core models... 392 powered Challenger with a 6spd, cloth interior for $40k
Not exactly "cheap" and not light weight but a step in the right direction.
http://www.blogcdn.com/www.autoblog.com/media/2013/02/01-2013-dodge-challenger-srt8-core-chicago.jpg
how bout the no option rt no computer screen,same cheap black interior,big long flat hood, very similar feeling to driving new 69 rr or bee can be bought for Toyota corolla money