1969 C10 long bed LS Swap

I am looking to sell my 1969 C10 project. I have only had it out for about 200 miles of shake down testing so far. I have almost 20k in parts invested to date. The engine and transmission is out of a 2005 GMC Sierra flex fuel truck with 120k on them. It has a custom harness and computer along with an installation kit and radiator from BRP hotrods. The entire swap kit was used during the install. The cab has a complete new 1 piece floor along with inner and outer rockers plus cab corners. The suspension is the new RideTech Street grip setup. It handles amazing and rides smooth. The wheels are 20" Detroit steel wheels. The gauge cluster is from Dakota Digital. The hood hinges are from RingBrothers and work amazing. The fuel tank was custom built by Ricks Tanks and sits under the bed. The headers were from BRP hotrods and the exhaust was custom from Brighton radiator. The stereo, amp, speakers and sub were all purchased within the last 3 months. The truck has all new seals for the doors and windows with a brand new windshield installed. The braking system is new as well with Disc brakes in the front controlled by a power booster. The center console is a aftermarket piece from LMC and the seats are from the last gen Camaro. The heater controls and heater core are brand new and the rubber floor mat is from LMC truck. I know I am missing some things about this truck that were replaced. Like I mentioned I have roughly 20k in parts.
During my driving, I have only noticed two issues that I have not been able to address due to my current work schedule.1. The transmission will sometimes not go into overdrive. It comes up with an error for transmission pressure switch2. The clamp for the fuel fill hose is not tight enough and will sometimes leak during filling.
I have had the truck on the interstate and it runs and drives great. We are having our first child in March and I am looking to reduce the number of current projects I have.
Have a great holiday and thanks for looking.
Mike