Help please asap!

Hey guys need some info, guy in town has a 72 dart with a 318 and a 904 runs and drives good, I was wondering if I could take the motor, transmission, read end, brakes and put all that in my 67 dart with a slant 6. Wanna swap all the parts out to a v8. Guy will sell the car whole to me for 600. Any information will help thank you