You can find other pictures of it on the Tony Rigoli facebook page. TRP is an Australian Subaru tuner which has been around for a long time.
I don't think it's a tube-frame chassis, but it's hard to tell if it's just the body grafted onto one or if they hacked up the BRZ unibody.... Twin-turbo H6 EJ engine, automatic transmission.
ESX/Ali have built a bunch of fast cars in the past, same basic recipe.