Help me out here. I see that under the GCR section regarding cars registered before 1/1/86 (2.1.22), rule C2 prohibits the use of wings.... I know that FF cars were never allowed wings, but this section seems to apply to F2000 (and later, FC) cars. I own a Van Diemen RF84 that was registered well before 1986 and I'd like to drive it in vintage events with its wings and slicks. But why this rule?