The Mazda MX-5 Miata Custom market includes vehicles from the NA generation of Miata's (1990 to 1997) that have undergone significant exterior or mechanical modifications as compared to original factory specs - generally known as restomods or custom cars. This includes body and/or engine conversions. It does NOT include restorations and/or the addition of performance accessories. Samples in this market should be evaluated on a case by case basis.