Tonneau cover for 07 fit 00 ???

Local guy is selling a tonneau cover that was on his 07 ECSB , will this fit my 00 ECSB?

It's a good deal so I'd like to grab it soon

Thanks,
CopperTop

07 new body style or 07 classic? You both have the same length beds? Both have the same width beds?

If its an 07 classic then yes, if both beds or fleet side

Found out his is a 07 GMC Sierra

Did they come with the old/new body style as well in 07?

Yes.