I have a 1979 Intermeccanica and have no idea what the rear end is made from. It is a tubular frame put together in California by a guy named Michael Downs. The front suspension is Mustang II. The rear has a 1967 Porsche 911 901 transmission (adaptor for Wankel engine) with Nadella flanges (I think). I however have no idea what the rear suspension is. It does have drums on the rear, early Porsche phone dials for rims and coil over Spax shocks. Any ideas here would be super helpful.as I start to get into it!