Charlie Osbourne at ZeddFindings can provide replacement 280ZX floor pans and support rails that would fit the requirement http://www.datsunzparts.com/NewParts/summary.htm

GWGarrard

I'm not aware of aftermarket rails for an S130.

Charlie Osborne sells them though Zed Findings (now at http://www.datsunzparts.com )

You're a faster typer than me, Mr. Garrard...

The only question now is how far back the rot goes, as the replacement rails that Charlie sells don't appear to be very long (after the bend) though it is difficult to tell without a side by side comparison...

Edited March 2, 200917 yr by zbane

the vin starts with HGS13000..... this will be my first Nissan, so im learning here....

the more i look the more i keep seeing "floor support rails" are these VEHICLE frame rails or interior structural support pieces? it looks like in some pictures its welded to the replacement floorboards... im so lost!