Front and rear: Replace existing brakes with new Wilwood brake system.
Repair area on firewall below master cylinder where brake fluid had lifted the paint: paint firewall. On Wilwood brake system: install parking brake system by adding Wilwood parking brake to rear wheels. Fabricate and install new rear brake lines. Plumb in new Wilwood proportioning valve. Fabricate and install new front brake lines, install new brake line clamps, check brake coils; all brake connections are tight and do not leak. Check and adjust Wilwood parking brake. Remove and replace the differential, top off with correct gear oil. Install new oil cooler lines & fittings, install 1/8 NPT stainless steel plug in master cylinder, bleed brakes, adjust proportioning valve. Trim off brake extension, adjust parking brake, re-adjust parking brake, check wheels by spinning.
Test drive. All work performed checks out. Deliver the car.