Here you can see the Chevy master cylinder mated to the Toyota dual booster and mounted to the firewall. The installation came out clean and fits the available space well. For the front circuit, we ran all SAE plumbing and hoses down to a tee on the front axle where it split off to each front caliper. For the rear circuit, we used SAE fittings and hard line down to the original metric fitting on the frame rail that connects to the brake line running to the rear of the truck. We cut the lower SAE fitting off our hard line and re-flared it, using a metric male to connect to the original Toyota fitting.