CT racing for your tie rods, just about any of the site vendors for your harness & harness bar. Get at least a 4 pt harness system. 5 pt are nice ( I have them) for 2 reasons. 1 you can't slide down under the belt, and 2 the crotch belt keeps the lap belt down where it needs to be (They tend to ride up on you with a 4 pt system). Doors are nice as they tend to keep legs and feet inside the car. After looking at your stock cage after the carnage, maybe an aftermarket cage, or some beefing up of the stocker. I am glad you didn't try to get that back seat, and cage extention you wanted to do. That could have been devastating for anyone riding back there.