1973-4 RD250/350/A (Pic 1 top). Original black background. Tacho has 8½-10k red-line, wide markers and neutral light cutout at the bottom.Order Kit RD10. 1973-4 RD250/350/A (Pic 1 bottom). Tacho has 8½-10k red-line, wide markers and neutral light cutout at the bottom.Order Kit RD11.