Sorry for another "which Trek is this" thread - but I just acquired this bike and couldn't help myself! Obviously ignore the components on the build, the seller built this up from a bare frame.

The seller indicated that this is a 1982 Trek 710, but the 1982 catalog doesn't list this colorway as an option for the 710/715. It could be a 510/515 based on the color, but mine has Reynolds 531 tubing, not Ishiwata.

The serial number lookup made things a bit more confusing. According to V-T, 090643 would place this frame as a 1983 Trek 730. I wasn't able to find much info on the 730, apart from some geometry figures in the 1982 catalog, but I don't think it is a 730 because the wheelbase measurement matches the 710, not the 730.

So do we think this could be a 1982 710 after all?

Thank you!!
Nishad