I have a 1976 2002. Will the early model "flush" mount front turn signals fit on my fenders without any mods?

They will fit without body mods, but the flush signals have provisions only for turn signals, so you will have to find a way to fit dusl-filament ulbs.

A quick and easy way to do it is with Tap A Lites, which can be bought at U-Haul stores. Another way to do it is to drill out and adapt the inner frame from the US Spec assemblies to the Euro ones.