MoparBlog spotted pair of HPP Challenger Superbirds that showed up over the weekend at a big Mopar show near Seattle. The kit goes for around $18,000 and that doesn’t include body work and paint! Apparently they were getting a ton of attention. So what do you think? Would you try to make a brand-new Challenger look like an old B-body wing car? More pics and video at MoparBlog!