Swap the rocker covers over, full oil change and carbie kit and it is away, keep the patina as it is, just to piss off the purists.
In reality the gearbox probably need a refresh, at least all the boxers of this era I have spannered on have been found to need it.
Good project, But don't make it another "as it left the factory" bike.
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'95 Sport 1100 Guzzi,'84 Cali 2 Guzzi, '95 Guzzi mille, '84 R65LS, '84 R100, '82 R100RS, '05 DL650, '72 Bultaco Sherpa T 350, '78 Montessa 348, "00 XR650R