Hi Jimi hendrix ! :D
Nailbomb / mule combo seems to be a very popular choice. I think (I might be mistaken though) that steve stevens used it before the RY combo was designed....
That said, when I asked Tim for a Mule neck to pair with a nailbomb bridge he advised me against it when I told him I was looking for a perfect match in both tone AND volume balance.
He said a mid/high output pickup in the bridge, like the NB, need something hotter in the neck to sit well against it. His recommendation was the crawler, to nail the pure vintage tone I was looking for, over both mule and abraxas.
He said the crawler was the closest to the mule.
here are his words found around here about how does the crawler compare to the abraxas :
"Abraxas and Crawlers are very similar : fat, warm and singing. The Abraxas neck is just a little sweeter, the Crawler neck sounded slightly tougher/more aggressive. the Crawler is a little hotter than Abraxas although both are AIV powered. The Crawler neck takes the neck Mule tone to a much hotter level-DC7.6K Alnico IV. " 8) 8)
........So I'd say : crawler, crawler, crawler ! :good: