Direct bolt on into your gauge bezel. It self calibrates itself and everything as well. Bought this thing years ago for $350. I have no idea if it's still available, but if so, I know it cost more than that now.
I'll let it go for $310 shipped.
Back side of it. Just simple plug and play.
Follow Ups
RARE From Japan 300mph speedometer gauge - collegeboy01:04:31 02/16/10