not sure who's making a true equal length header for the early chassis and i'm not truly convinced equal length is necessary; especially if it's a bracket car. i do have 2" tti's on my '65 coronet with a 440 and the engine in the stock location. they fit like a glove. i also use studs to mount the headers. they've been on my car 17yrs and will probably be on there a few more years.