73 Duster

Having owned several 5.0 Fox Body Mustangs, I am familiar with them, and the performance potential of the sbf, would be interested in following a build thread.
I have a customer that I'm going to help tomorrow that I've been working with for some time and he has a 69 Ford Torino style wagon.. he has a 4-speed setup with hydraulic clutch and what he said was a built 302 out of a Mustang. From my Mopar experience I know having something that huge with a small block is not optimal.. my problem is I don't have enough cross reference to know what to recommend as far as an easy build big block which in my opinion I think you should have. I can only imagine that the 302 Edelbrock head small block that he has is cammed for a Mustang.. not half of a German tank... Any recommendations or thoughts would be welcome on that without completely hijacking this thread.
And as far as putting a ford in a Mopar I was not nay saying at all I was definitely offering what I thought would have been a little bit more budget-minded just staying with the Mopar but I'm watching...