67 Coronet 440 2 door Hardtop

Hi guys, need some advice if you could. When I bought the 67 Coronet my intentions were to fit my spare motor but as the car is so original and runs like a Swiss watch I'm gonna leave alone. My spare motor has sat in the corner of the garage for almost four years after being refreshed and the CR reduced. It's first owner was Dick Landy and the second Tom Nelson who used it in the engine masters challenge in 2003. It's a 71 Cold weather block, stroked to 470ci. I've put my Indy 440-1 heads on it, CR now 11-1, dynoed at just under 700hp. I'm seen a 68 2-dr post Dart in OKC with no motor for sale. The advice I'm looking for, is my motor gonna be easy or impossible to fit in this car ? I imagine as you guys grew up with these cars that someone out there has done it, loved it or cursed it !!!!!!! Really appreciate any advice, Al