Doug Thorley Headers with SB Trick Flow Heads

I am sorry to here that. I still think that the TFS head is not matching the stock head where the exhaust bolts up. I can't believe a header can be this fare off, I ended up using motor mounts from a conv whice raised the motor almost 1/2" and they still hit everything! I feel the pain .Cheap headers next time, I called TFS and never got a clear anwser, so until someone can bench one with a stock one we will never know for sure.