Yesterday I went to a shop to pick up a part. I noticed that they do inspections. I told him that I have a 52 F1 Ford that needs a sticker, and said nothing more. His first question was, does it have any modifications. I told him what could be plainly seen. It was an F1 sitting on an 89 Chevy frame and has a 68 engine. He said that it would have to be inspected as an 89 vehicle because it was modified. I told him that it was not registered as a modified vehicle, it was registered as a 52 F1. He says that according to TXDOT I will need cat converters and air polution crap on the engine. I just spent seven hours pouring through TXDOT laws and can't find anything pertaining to modified vehicles. Anyone have any insight on this???