I've found over the 21 years of Morganing my set of BA nut spinners and and open enders come in handy too for the smaller stuff..
A good selection of Metric, Whitworth normally suffices.
An angle grinder for the exhaust has been known to be used in extremis on the U clamps..
Despite its name, BA (British Association) is actually based on an obscure Swiss watch making thread - probably why 0BA is interchangeable with M6 x 1
Arwyn