Ciro, when you mention comp coupe motor, is the one from Dan Cragin the one? Dan is a great guy and a straight shooter. He has a ton of customers across the USA and we are lucky he's here to service us in California.
That's a great price for that motor, and the comp coupe comes with a better cam. Also, since its sitting in his shop, it will be much cheaper to install an upgraded heads and even a better cam. Cheaper as he, like most shops, do and engine out to change the heads. Give him a call, he's a great guy, he might even be able to give you something for your core and he'll ship in the correct engine container. Best wishes! Mike B