Twin plug head value
 

911 104 306 date stamp 5/71 twin plug. intake approx. 37.2mm, exhaust approx. 34.9mm
I've decided to sell my 2.8 twin plug head motor.
Can someone give me a value on the heads? They are stock heads drilled for twin plug. I'm trying to establish a price for the heads only.
Here is a link to a thread I posted some time ago about the heads.
http://forums.pelicanparts.com/showthread.php?s=&threadid=231164&highlight=myster y+heads