I just acquired a set of heads that the previous owner that were Trick Flow Twisted Wedge but I don't recognize them. The only markings I can find say "SN9517-3" on one and "SN9524-3" on the other and both have "Varner" punched into the rear of the head. Chambers are definitely wedge-shaped which may have been why previous owner thought were Trick Flows. Anyone know what these are?