1966 Pontiac GTO Hardtop. Factory 4 speed. Needs full resto. Rare car

As stated a Genuine GTO, actory 4 speed car. The original motor and trans are gone. But I have a 400 engine with auto trans that goes with it that probably needs to be rebuilt. I also have a muncie 4 speed that came with the car. Not sure if it needs to be rebuilt or not, ould be original transmission. The engine is a 400 and was told it was out of a 68 or 69 gto. Have seats but they need work as well, nd most of parts for it I will show pictures of. The car is a great solid project as we did majority of bodywork already. Was taken down to bare metal first than made straight, ust needs to be blocked out. Around the window frames will still need a bit of metal work. Have original 4 speed center console and even an intake manifold for three carbs. I do have both tail lights, ust pictured one though. I do have a brand new rear chrome bumper for it also just no pic of it yet. Also have airbox and parts for ac that came with it, ot sure if it was factory air but it came with the parts for it when I bought it. We were going to make a pro touring car out of it but just have way too many projects going on. Please feel free to ask any questions. I have a clean california title in hand.