A local fabricator here central PA by the name of Adam Romig built them under Susquehanna Motorsports in I think 2014, 2015 , he built the Predator chassis for Barry the last few years they were in business, very qualified fabricator, very good quality, no on track experience with the champs but plenty with the flat chassis which was very competitive.
JC Speciality would have info on them
570 837 0042 ask for Nip