Hey. 
 
Wandered in looking for something else.... 
 
Noticed the discussion of Modulus necks and what about different body woods. 
 
Just for info I have a Quantum 6 Custom SPi that I got new in 1991 and it has the original no-truss rod neck (never a problem) and a body of mahogany with a cocobolo figured top. 
 
So yes, combining the graphite neck with other woods results in a fabulous warm sound with clarity a plenty. Best bass I've ever had period. 
 
 
 
drek