64 longbed fleetside bed mat what modern chevy's fit?

[akqj9]

I looking for a rubber bed mat for my 1964 fleetside longbed. There are lots out there but some companies don't list 1964 sizes. I want the mat to cover the full bed and need the fender cutouts to fit well. Do the later models have the same shape or will using something like a 1990's longbed mat not fit well? Are the next generation 67-72 shapes the same as 1964? thanks

[1958Warrior]

Might try in the 1960-1966 message board,
not sure if the bed dimensions were the same in 1959