Ever wanted to run a big GT30 or similar style turbo on your RB30, but always worried whether the standard manifold would hold up to the job!! Well, look no further. The AVO stainless steel manifold will out perform all others in its field whilst still running a T3 flange, it works as both an upgrade and replacement manifold. With a flow rate around 35% better than standard and a durability about 30% stronger why would you even consider looking elsewhere!! Hmm, i see. Someone has told you about cheaper high mount manifolds - if you like being hassled by the police, then be my guest in purchasing one, also enjoy the costs of making custom oil/water lines, dump pipe, intercooler piping, heat shield, fitting charges.......need i go further! If you want that big turbo, but still want your car to look the way it always has and will suit your existing mods, what are you waiting for......it can't be any easier. This manifold also has some solid wall thickness for those guys running external gates, just weld an adaptor on - no sweat! The AVO Stainless Steel Exhaust Manifold upgrade for the Holden VL. An upgrade in flow and durability.