My '57 is a compression/threaded fitting at the gauge. Looks like you will have to use a coupler to lengthen your line if that is the issue.
I think the existing line will be long enough. Where it attached to the 207 was further forward than the 235, so I should be OK cutting it and putting a new fitting on the end. What what you said is always an option as well. Definitely don't want to mess with the connection at the gauge.
