I have a set of 273 8cyl heads and intake with 2bbl carb that I took off my 1964 Plymouth Valiant signet200. I replaced it with a set of 318 heads and intake. The heads and intake are for sale for $30.00 plus shipping. Pleas call John at: 863-327-6732. If you cannot get through, call 863-646-5197, keep trying. Thank you for looking.