Shawn, for all intents and purposes, the Foundation is a Jazz bass with SFs. I'm positive that SFs in a Jazz bass would sound like a Foundation, being that SFs are a touch more aggressive/attack-y than the relatively smoother sounding J pickup. Aside from all the obvious material, electronic and design similarities of the Foundation and Jazz Bass, the big tell is pickup placement as that is where the harmonic signature of the bass resides. The Foundation pickups are centered at 28" and 32" from the nut. My Jazz Basses have pickups centered at 27 3/4" and 31 3/4 (1972) and 27 7/8" and 31 3/8" (1997). For comparison, my 1983 G&L El Toro (which is a Jazz inspired L2000) has it's pickups located on 28 1/2" and 31 1/2" centers. FWIW, 28 1/2" is the traditional P bass PU location, and 30 1/2" is the Stingray. Both measured from the center line between the two coils. Based on my measurements, the Foundation is pretty much set up with pickups in the Jazz Bass "70s position." I have found that a 1/4" difference in placement doesn't really have a huge effect on the harmonic signature, but the type of pickup does have a huge effect on the tone. My El Toro (which is more like "60s position") in passive mode has that similar J bass kind of harmonic tonality, but those narrow, dual coil MFD pickups are louder and thicker sounding.