My father was a GT40 owner for many years so I have a great respect and understanding of these cars. He owned GT104 for more than 30 years and had collected many rare GT40 and Shelby parts. Due to health reasons, he sold the car and is no longer into the automotive restoration business. He has given me his remaining parts inventory and I have been trying to work through it. There are a bare set of MKII 427 aluminum med rise heads in particular that I am trying to value. The casting number is C6FE 6090C and it has a sk#33444 $55A. I was going to use these heads for a 427 build that I have planned, but have thought that maybe a person with a real MKII would need them more than I do and I would go with a set of aftermarket heads from Dove. I also have some MkI 289 GT40 stuff including a bunch of Weber 48IDA-4's and NOS intake. If anyone can shed some light on this stuff I would greatly appreciate it. Thanks