We'll need the pictures, and then we can all run out to our bikes to have a comparison look-see.
One thing to keep in mind, is that the frame appearance, sans decals and identifiable paint, is somewhat generic for the time period.

Minus the decals, you probably couldn't tell an Elite from a Lemans from a Comp TA from an Ironman, or a Prestige or Turbo, for that matter, if the chrome was painted over. Other than geometry, they look very similar with no markings. Compound that with nearly identical Panasonics, Nishikis, Shoguns, and boy it can be hard to decipher.

That's my opinion before photos. The serial number is a really good indicator, especiall if it's letter for letter, digit for digit. The '84 Lemans RS did have DC brakes and a Sugino crankset, but had Suntour derailleurs and shifters. Any combination of the components, or all, could have been OEM or replacements.

Figuring it out is half the fun. Some of us could likely tell by riding it, what it rides like or not like, but only when sober.