I purchased a pair of rebuilt N* cylinder heads on eBay. The seller said they were VIN-Y, and that was OK since my N* is also VIN-Y. After the heads arrived, I noticed the camshaft lobes weren't as pointed as the ones in my VIN-Y. I then measured the amount of lift on both of the right-intake camshafts, and found the new camshafts had 0.031" more lift ... same as what the factory manual specifies for VIN-9 over VIN-Y. So, it looks like I got myself a pair of VIN-9 heads, and my engine will be 300HP in lieu of 275. Here's a photo that shows the difference in the cam lobes between the two engines (the VIN-Y is on the left):
Though I do not know which VIN it was, another set of N* heads recently sold on eBay ... with zero miles, never installed ... for $450.
[This message has been edited by WAWUZAT (edited 04-01-2007).]
