@bucket thanks for the reply frame measurement would be nice! Thanks.
As @Ricko1966 mentioned waiting until I have the bed does make sense too.
Thanks all.
I've had to replace a section of frame on my 1980 K10 and need to redrill the front most bed mounting bolt hole on both sides.
Can yall let me know what the center - center dimension is so I can drill the holes in the correct location while the bed is off? I don't yet have a replacement bed so...