I had a similar query with a Yamaha 335 clone for playing the same kind of music (jazz/funk/soul/fusion).
I installed unpotted A2 Stormy Mondays on Tim's recommendation and they are perfect.
How does the bridge pickup sound? Is there enough bite and aggression in it for fusion lead?
There aren't many clips of the SM bridge playing clean here (or have I missed them?)
I was musing about a Stormy neck and RiffRaff bridge combination.