Funky/fusion jazz with heavy base emphasis....

Benthar, I would realy recommend to grab ANYTHING where you see Pohjola or Moerlen. His albums are realy difficult to remember how to spell since many of them weren't ever printed in US or for US and they're on Finnish or Norwegian. US issues are "Space Waltz" and "Urban Tango" that are certainly less rare than the rest of european issues and certainly cheaper. The european issues are $$$!

I've been running into some fairly great jazz/electronica fusion as of late. If you're inclined to dig into that kind of sound, check out the Tied & Tickled Trio 'Electric Avenue Tapes' or DJ Spooky 'Optometry'. This stuff uses real players, real-time sounds, etc. and is not simply your standard acid-jazz fare that garners a jazz 'flavor' by slipping in a few samples and rhythm loops (even though some of that stuff is very nice as well). The 'Optometry' recording even uses, as it's band, some choice playing by some very hot, very 'now' jazz players; Joe McPhee, Matthew Shipp, William Parker, Billy Martin, etc.

Return to Forever - Romantic Warrior. This was remastered last year. Heavy bass, not a bad recording

Brand X and Jeff Berlin albums have wonderful bass. You may also want to try Tribal Tech albums such as Dr. Hee, Illicit, and Spears. Also solo recordings from Chad Wakerman and Laurence Cottle are quite heavy in the bass registers, if you like jazz fusion. Lots of these recordings are hard to find but Audiophile Imports can help you find most of them.
Kelvin

You could try: Music Revelation Ensemble very funky power fusion, PBD with Jaco on bass,Stuttgart Aria with Bireli Legrand on guitar and Jaco on bass, Essence (featuring Jaco) Last Flight.....These won't be easy to find but they might satisfy your jones for power funk jazz fusion, for a little while anyway.