Can you help id this slant six..!?

Me and my friend have a 68 slant 225 that was in the 65 Barracuda he recently bought.It was a running motor when we pulled it but that's all we know about it.We put in a 65 motor I had to make the car more correct.I know he wants to send it on it's way so if you are interested I'll talk to him about it and we can take the 66 motor when we bring it.I need a 66 block for my 66 Valiant convertible
I have a lead on a good 72 motor. I’ll let you know how it works out or if I’ll take you up on the offer of the 68.

Let me know when you want to come out and pick up the 66.