Need advice on finding engine parts and what to look for?

if you use a willwood hydro throwout, brace the cylinder to the inner fender with something like a 904 engine brace as your firewall will flex. V6 Dakota was a V6 LA so the rear trans pattern was the same. You can carb any 360/5.9 with a crosswind style intake. 5.9 magnums may not have a fuel pump eccentric on their camshafts.