Set of heads off my 460 low kms and in great running condition. had new positive valve seals put in when cam was installed about 2000 kms on cam and lifters.
Cam is a comp cams 255DEH part number 34-223-4
http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=34-223-4&Category_Code=FHFTCDU
Comes with heads cam lifters push rods and rockers.
Everything is in great shape.