WANT MORE??. ok we have a special price for it too! Weight: 20lbs (9kg). Turbo Flange Bolt Specs: T2 turbo flange bolt holes: M8x1.25; T3/T4 turbo flange bolt holes: M10x1.5; Wastegate flange bolt holes (if applicable): M8x1.25 SPA Turbo has one of the widest selections of turbo manifolds in the world, including hard to find applications.