No small block R/T's in 1970.
I've heard that the factory made a mistake on some 340 cars and put R/T badges on them by mistake. The 340 cars were code A66 but were not R/T's. Those 340 cars with R/T badges would still have a JH VIN.
There is more debate in 1971 whether or not an R/T with side stripes would have also come with R/T badges. Some say they had both. Others say if the car came with side stripes(the stripes had the R/T logo at the back) that the R/T badges on the front fenders were omitted.
