Looks like this might do the trick for many as it is shorter than the stack up of the Autometer 2267 / Russell 660831 at 1.6", and cheaper to boot!
Haven't put it on, yet. A friend's brother found it, purchased from:
Hose & Fittings Etc.
Michael
510-661-0151
Part #: TFD (Tube Fitting Division) 6M14C80MX
Description: 90* elbow, -6AN male to 14x1.5 male
Cost: ~$16.
I did a search and found this site Parker Hydraulics, Pneumatics, Fluid Connectors, Hose, Fittings, And Related Products , so you can go ahead and contact whichever store you want. Maybe one of our Buick vendors will start carrying them at some point.

Haven't put it on, yet. A friend's brother found it, purchased from:
Hose & Fittings Etc.
Michael
510-661-0151
Part #: TFD (Tube Fitting Division) 6M14C80MX
Description: 90* elbow, -6AN male to 14x1.5 male
Cost: ~$16.
I did a search and found this site Parker Hydraulics, Pneumatics, Fluid Connectors, Hose, Fittings, And Related Products , so you can go ahead and contact whichever store you want. Maybe one of our Buick vendors will start carrying them at some point.