If you're buying these (and I can see you're tempted
) Steve at SVC reckons the headlamps are not SVA friendly, being motorbike items which dip straight down and not to the left.
SVC sell them
http://www.s-v-c.co.uk/lights_head.html
(about three quarters of the page down - "Racing Headlamps").
I've been searching for months for SVA friendly lights,smaller than 5 & 3/4 inches for my new project and I can't find ANY!
Any leads would be appreciated
cheers
Chris