I'm with you on this one Zorrow. I, too, prefer the "ugly" headstock on a Vector rather than the pointy one.
You should pester JohnnyThunders to sell you his white Vector with sustain block that use to belong to GusS. In case you don't know, GusS lives 20 minutes away from us
Hamer is too busy on building orders to even consider doing something as trivial as putting a 3+3 neck on a Vector body. Too bad, they use to be the company that would do the super-cool custom stuff.
If Vernon Reid can't get the guitars he wants, the chances that you will are, unfortunately, even lower.
Go with Ran Guitars. Looks like they build some cool stuff.