I’m looking to help a neighbor get his original 51 back on the road and be more reliable. He said the car sat for many years. He took it to a mechanic who got it running for a short while but he’s had to have it towed home a few times and is now afraid to drive it and sick of sending it to his mechanic. I’m not familiar with anything older than 65 but I consider myself pretty mechanically inclined. It seems like he is having fuel delivery issues as he as mentioned dirt in the fuel, getting the tank cleaned....Not sure how bad the tank is internally and it may be easy to just replace it and the lines ext...and rebuilding the carb to start. Where can I go to get parts for these old Buick’s? Also are there ignition upgrades available?