A 1974 Duster - My 2nd one, 41 years later!
Hey Alex, is you're suspension completely installed/torqued? Are you using headers or manifolds? If your suspension isn't all torqued (and maybe even if it is) and if you're using headers I'd suggest dropping the suspension, bolt the engine and trans to it and put it all in from underneath. I pulled my 318/904 like that and will be putting my 5.9/5 speed back in that way. Less chance of scratching paint, don't have to fight the headers and it's easier to do if you're working alone.