I would like to know the last model year that Chevrolet used the "X" frame. I think it was 1960, but am not sure.

The X frame was used on full sized chevrolets from 1958-64.

i think the x type frame was used earlier than 1958. you may have been refering to the more modern cars . are you going to beaumont gene .

our 50 convertible has an X frame. mike

Seeing he was refering to 1960 I would assume that he was talking about the late cars with the X and no side rails.Also used on 1957-60 Cadillac and 1958-60 Pontiacs.

The first Chevrolet to use an X in the center of the frame was the 1935 Standard.Then the 1941-57 convertibles had the X added to the standard frame.The 1934-36 Masters had a YK rather than an X.
pushrod-no Beaumont.....just Grand Junction at this point.

Thanks for the answers, 1958 -64 is the answer I needed.

Need sheetmetal for 58 candian pontiac Laurention
will the windsheild or other glass fit from 58 Chevy
floor pans
front fenders( esp headlight area)
rear quarters
will any 58 full size parts fit in the body sheet metal catigory
IT has a 261 Inline six 2speed power glide fit from a 283 V8

The glass from a 1958 Chevrolet and any Pontiac is the same.That would be US or Canadian Pontiac.The Impala glass is different from the other body styles due to the lower roof,etc.The Laurention floor pan would be the same as a Chevrolet.Outter body sheet metal different as well as the front sheet metal (hood and fenders)