Need help perfecting the budget build hemi swap

I bought a 73 Duster when I was working in the oilfield back in the late 70's for $150. I had a mangled passenger quarter and was missing the marker light. The hole was a perfect place for wasps to get in the trunk. The car cost me another $75 because of the cortizone shot I had to get. I was stung on the knuckle and my arm swelled up to my elbow in minutes....