somethings wrong with me . luck of the draw?

hi all .ever wonder why decisions are so hard for you and easy for others? in pursuit of an 8-3/4 sure grip i checked out a local add for a 1965 imperial called the guy and talked for a while decidec to go look at it . expecting to see a wreck I see an original crown coupe with a 413,v-8,727,sure grip with a 742 center. it is very straight . it had a vinyl top so top rusty [possible small holes needs new interior it is a very hi option car with a/c and cruise control,power windows ANTENNA rear speaker power mirrors,the bumpers are toast floors need help but suprisingly solid and straight .price seems good but will this rear diff fit my barracuda and should I strip this complete car ?will the 413 fit my a body will the 727 fit my a body ? should I do it ?can I sell these parts I dont need ? or should I adopt this project and keep it original ?need some guidance opinions and tech info thanks ,larry:read2: