1. Out of Production Cars

When a car is out of production, or parts are no longer available, you can use aftermarket parts as long as they are as close as possible to the original specs, and are not high-performance parts.

Out of Production Cars - Full Rules

Where a car is out of production and the manufacturer is either out of business, stocks no parts or no longer has a required part, a part of any origin but as similar as possible to the original may be substituted.

1. The entrant must be prepared to show documentary evidence that one of the three circumstances above applies and that the substituted part is as similar as possible under the circumstances.

2. Substitute parts which provide improvements in performance (e.g., superior gearing, lighter weight, better camshaft profile, etc.) are not permitted under this allowance.