I recently found an interesting article at Muscle Car Blog News:
Completely designed from the ground up, Turbonetics engineers threw out the rule book when creating this new middle-weight wastegate' Capable of comfortably handling 700+ HP and only measuring slightly more than the super slim Evolution Wastegate, the RG-45 features V-Band connections in and out, 45mm valve diameter and cast stainless steel base for strength and durability'

Found at: Muscle Car Blog News