Early Abody Doug’s 450 header install BEFORE engine going in

I've done it with my Patriots and the 340 Duster and I've done them on a big block and a Coronet and a small block and a satellite I just hang them up in there with some wire drop the motor in and then hook it up. And of course anytime you're dropping a meal in especially if the transmission's attached to it it's awesome to have an extra set of hands or so! However I've never tried them in an early age with the type of headers you're talking about