This past week-end I saw a Tiger with a extreme low riser aluminum intake. I was wondering if anyone knows what the application was. The runners are in the valley with the manifold being nearly flat on top. It had a 1 inch spacer with a Holley 4 bbl and a 3 inch filter and still set about a inch under the cowl. The numbers cast in are 10013956 with a date code of 11-16-65. Nick