Major Problems with my 1966 Chevelle! Can I fix it?

I have major problems with my 1966 Chevelle. Can I rack it and fix it? Please leave a comment and let me know what you think about my fix. Lucky bought it as a roller from Calin for $5,500 in 2012 and got to work assembling a budget drivetrain for it. Scrounging eBay and Craigslist, he built a wickedly fun car for not a lot of money. It's loud and fast and stripped of most amenities, so it's very tactile and engaging. The lack of carpet or sound-deadening means you can hear the car working. The 6.0 makes plenty of torque, so burnouts are just a mere flick of the ankle away, and like the Primus song, Lucky lights 'em up just for fun. This Chevelle is in every way a mechanical extension of his personality—brash, fun, and just a bit rough around the edges. Engine:It's a low-mileage 6.0 truck engine Lucky bought for $1,000. He eliminated the displacement-on-demand parts, changed the cam, and added a set of MLS head gaskets and ARP head bolts. The engine is otherwise stock. Lucky built the bracket to relocate the ignition coils to the firewall, and the engine is cooled by a BeCool radiator and a pair of Spal fans. That's a road-constriction sign at the base of the air cleaner, which seals it to the functional cowl-induction hood from Original Parts Group. Holley's HP EFI runs the show, and Lucky can alter the tuneup through the 7-inch touchscreen dash-mounted next to his gauge cluster. Transmission:Lucky bought a used T56 out of a Pontiac GTO from a friend who specializes in manual-transmission rebuilds. Exhaust:Long-tube headers from eBay lead to a 2-1/2-inch Magna Flow dual-exhaust system Lucky built with an X-pipe. Suspension:A full Chris Allston Chassisworks suspension gives the Chevelle its killer stance. Components include their drop spindles, A-arms, trailing arms, and springs and shocks. Brakes:The front brakes consist of CPP's 13-inch rotors and two-piston calipers. Baer's rear disc conversion assist out back. Lucky has an adjustable proportioning valve mounted inside the passenger compartment next to the driver seat so he can adjust the brake bias while driving. He also installed a line lock to aid in the smoky burnouts seen in these pictures. Rearend:It's a fabricated 9-inch from Chris Allston with 4.11:1 gears on an Eaton Detroit Truetrac differential. When former owner Calin purchased the car, it had a 12-bolt with welded-up spider gears. Wheels/Tires:Nitto NT555 rubber is mounted on 17-inch American Racing Torque Thrust wheels: 245/45 ZR17 and 315/35 ZR17, front to back. Lucky and Tony installed mini-tubs on the Chevelle for an episode of Hot Rod Garage. Interior:The rollcage is from Chassisworks and was modified and installed by Bare Metal Fabrication in Carson, CA. Amadeus Upholstery made the rear seat pad, and the front seats are from a Hyundai Tiburon that Lucky found on eBay for $300 delivered. They are extra comfy for long road trips. Lucky did all the wiring and installed a Vintage Air underdash HVAC system.