I thought that manifold was cast the first time I saw it too and was wondering how you did it or where you had it made... That might be something you may consider making a handful and selling because not only as a performance add on it also looks really cool and may help some of us with tight frame clearances. Just an idea to consider in order to help fund your motorbiking habit.
I bet that Roo engine would respond really well to a 16 to 18mm Walbro or Tilly carb from the way you describe how it performs, especially if it feels like you're running out of carb on the top end, or even running a pair of 12 to 14mm Tillys might work out really well on a dual carb manifold once tuned proper...
I bet that Roo engine would respond really well to a 16 to 18mm Walbro or Tilly carb from the way you describe how it performs, especially if it feels like you're running out of carb on the top end, or even running a pair of 12 to 14mm Tillys might work out really well on a dual carb manifold once tuned proper...