Vintage Motorsport did an incredible multi-part series on the Trans-Am series back in the mid-1990s. They covered the series from its inception in 1966, through to circa 1974, by which time it had all but fallen to bits. If someone has a copies, it gives a breakdown of each main car that raced in the series, including the small bore cars which were the backbone for the first couple of years. My copies are in storage, but I thought these might provide details on why the Alfa ran RHD.