120mm,
After you get you Cobra warmed up in Iowa come over to Nebraska to try a couple of these Sandhills Challenge courses. They shut down large expances of blow the cobs out curve filled highway with some five mile straight aways. When my wife and I get our Iowa built HM-2018, with a 427 side oiler, finished we will be hitting these courses.
Home | Sandhills Open Road Challenge | Arnold, Nebraska
Loup 2 Loup | Sandhills Open Road Challenge | Arnold, Nebraska