Are you looking for info for open road course track events or autocross? If road course, SCCA has just started doing a REX (racing experience) and at the event in St Louis last year, they didn't perform a tech on the car, just on the safety equipment for the driver. Other events were a track rents to an organization (like 10/10ths or MVP here in the midwest), they perform a light tech, but the heavy duty stuff is up to you. Things like brake pads, driveshaft loops, tires, belts, hoses etc.... are yours. Most of the track organizers are interested in helmets (must be a SN, not a Motorcycle helmet). Your harness, as long as not frayed or in bad shape should be fine and i've never had mine inspected.
In the end, when the competitive juices take over and you go faster, you need to decide, am I going to be safe if..... How much is your melon worth? Get out there and do it, it is the most fun you can have in these cars
