if the valves are rotated (not straight in line) and they are pedestal mount then they are old TFS TW. None of my TW heads say Trick Flow on them any where and they are old. and the old Will Burt High Ports only cam in stud mount and you would also see the raised exhaust ports right off I also have a set of them that are brand new.. I am not real sure on your wording canfered.. Do you mean canted valves like on a Cleveland head? Also if they are the TW heads send them back to TFS and they will set them up for studs I did it a few years ago and they did it for $100 and put new guides in and did a valve job at the same time best $100 I spent in years.

 

Thank You for the info I have just never seen heads with out markings on them.