I've seen this type of car before. There is a webpage that used to be listed with GNTTYPE.org, where a gentleman took a 79 TR motor (carburated), and custom made his own exhaust system for fit. He was diappointed with the performance and then squeezed in the intercooled motor to tune in some 10 sec slips...I believe it was a 82 porche. But that looks like the custom 79 motor. Good luck!
John