Headers 1965 273

Hey all, have a 65 barracuda with a 273. I know there are headers available for this but I'm looking for something a little more cost effective. Has anyone modified later headers to make work. I'm no stranger to modification but just want to know others experiences, thanks
Some have. I wouldn't. There have been scads of threads about early A v8 headers here on FABO. Do a little homework first and you will know the answers by others mistakes.