On my 1953 3/4 ton GMC I replaced my lenses with the 1955/
57 amber cone style, they look "great" & they fit the old openings!
They are from Brothers, they carry them for around $34 per side for the whole assembly .
Chevy Duty does have the glass lenses for around $12 each
(part # 47-115), but not the assembly/just lenses. Now,
I have my old set that you can have for a small $ + shipping !
(Only problem, I'm in Eagle Rock & the GMC is in Woodland
Park Colo.) ! Let me know ...If you E mail me I can send you a shot of what they look like !