PHILS2888, I installed one on my 51 a few months back. I did it while I was rewiring the truck. Had the gauges out as well as the dash grill and glove box door off. Sat on a milk crate reached threw the openings. I did think it was to bad of a job. Work perfectly when I was done. Only thing I wish I had at the time whenvI did it is the replacement rubber bushings for the arms.
Jeff 1964 Chevrolet K10 Fleetside "A Kid's First Truck" Follow in the DITY 1951 Chevrolet 3100 Follow his build in the Project Journals 1969 Chevrolet Camaro Convertible | 2020 Chevrolet Silverado | 3500 Duramax | 2021 GMC Sierra Denali USAF Veteran 1983-1987 | PSP retired 1990- 2012