new owner of 67 dart need conversion help

hello i just got a 67 dart 270 gt with all gts parts from another dart.so its a 67 gts clone i guess.it has the six with auto.trying to get ideas on simple,best affordable way to convert to a v8.i was told like 72-76 a body cars is way to go buy a whole car and start swapping.and is there any secrets i need to no when i do convert like will all factory wiring work fuel,k frame,anything else.any help apreciated thank you.i have always wanted to fix up a 67-69 dart v8 .thanks:lol: