My experience is to first unbolt the trans and leave it in place. Pull the entire front clip off as a unit with your ingine lift, easy and doesn't take long. Big reason I pull the sheet metal is that now you don't have to lift that heavy motor so HIGH and your puller may not have enough stroke for that. On my old 53 when I pulled the clip I found that the radiator support, (which btw is the key piece for the ENTIRE front end) had come appart at almost all the factory spot welds. May not have discovered that with the clip in place.
