What are these 1974 RS Parts worth ?

[Blackbyrd]

As some of you may know I am a parts Fiend, I stumbled upon some crazy stuff sometimes. Lately I've been focusing more on this and dedicating a lot more of my time to the parts business.
Most recently I found a lot consisting of Rare long hood items Including RS and Aluminum S parts.
Over the next few weeks I will be posting more items.


Helping a friend (with the lot) he has this set of 1974 RS MFI Cylinder heads
From a Eurppean model

He says they are rare as hens teeth but I can't grasp his price that he wants for them.
"how much does a RS sell for ?, What would the engine be worth? ....ect..ect"

Part number
911.104.307.1R with the "Y" marking (Yttrium)

Not to be confused with S model, similar to S models but not the same.

What is a proper price to ask for these ?

I've seen "S" versions for $400-600 each used in unknown condition
but he claims these are 1974 RS heads

[Matt Monson]

PM Steve at Rennsport Systems. He can verify what they are and give you a ballpark for core value.

Or post them in the engine building forum. Either Steve or Henry@Supertec will reply.

[faapgar]

Hi,having repaired a few of these.Very rare.If you opened up the cylinder head surface to accept a 90mm cylinder on a 2.2 or 2.4 s head you would own these rare RS heads.Intake and exhaust ports are the same.Ciao Fred Apgar