The wolf will have a basswood body with a 5mm maple cap.
The black Wolfgangs rarely had the maple cap. From where the finish has sunk I can see two joints, meaning it's just the three pieces of joined basswood. In some cases, when the maple cap was of insufficient visual quality, they painted them black, but then there would only be one joint visible (in the centre). I think this lack of cap is what lends the slightly dark tonality to the guitar (not necessarily a bad thing).
VHII's - thanks for the suggestion Jordan, but I think I'm after something a little more metal. Even though I bought a Wolfgang, I don't play much Van Halen at all - I just really love the guitar.
PhilKing - as far as the Crawlers go, they weren't a massive improvement over the stock pickups in the Korean Wolfie. I have a feeling it might be the quality of timber in the Korean model holding the Crawlers back. However, when I had them fitted I had the volume pot changed for a push-push, which adds a capacitor across one of the coils on each humbucker. The aim was to get a sightly fatter, and still hum-cancelling sound to the tapped HB's. I'm loathe to undo this work by swapping the Crawlers into the US Wolfie - as I said, I'm not much of a solder king!
Maybe the Rebel Yells are the ticket - the one thing that worries me about either the Warpig or the Nailbomb is that they always seem to lack a bit of warmth. The body of my Wolfgang is made up of three pieces of basswood, but I don't know how this compares to mahogany. It seems to accentuate the lows and lower-mids more than the high end.
Here's my check-list:
1) Tight bass for palm-muted chugging
2) Responsive to pick attack
3) Warmth/richness to the sound, with a bit of brightness to make up for the lack of maple cap, but not too much - I don't want the guitar to start sounding like an Ibanez RG...
4) Keep a fullness of tone when reducing volume on the guitar
Thanks for all your help!
Paul.