9C1 = father of the SS. If it hadn't been for the 9C1, your SS wouldn't exist. A man by the name of John Moss at Chevrolet took a police package caprice and based on a custom job he had seen once, converted it into the first SS, except his has a 510 cubic inch big block under the hood a red bowtie on the grille, and he had the ROH ZR6 rims which look very similar but are 17x10 instead of the stock 17x8.5 The 9C1 has more heavy duty stuff than the SS, less luxury stuff than the SS, more chrome than the SS and is not quite as low to the ground. The 9C1 was available with a stock 4.3 liter baby engine very simlar to the SS's LT1, only smaller, and for a $550.00 option, a 9C1 could have the LT1 as well. Also, the SS came with a posi rear end, the 9C1 required an additional $100.00 to get the posi rear end. The SS also has a slightly wider rear axle, but its hard to notice, and doesn't provide a performance benefit. The 9C1 also has 4 wheel disc brakes, similar to the SS, but the 9C1 holds thicker pads. Keep paying attention to this forum, the differences between the two cars becomes obvious, and it is very easy to clone an SS from a 9C1.