I'm in the process of building out an engine for my XS to take to BUB in 2012.
Ported head, titanium oversized valves/retainers, springs, bronze guides
Web Camshafts 59a grind
MikesXS 750cc kit
MikesXS taller 5th gear
Pamco 277 ignition
277 rephase
Will likely pair it up with re-jetted VM34's (what I have on the current stock engine)
We'll see how fast she goes in the 'Run What Ya Brung' class. Hoping to have a bunch of friends out there - make an event of it.