What's a nailhead worth??

I have a 64-66 cammed wildcat 401/425, running sweet that I was gonna put into my 29 Model A Tudor. Money is gettin real tight so I was debating selling it.

Anyone have any idea what it might be worth? advice would be greatly appreciated. thanks much brothers and sisters

 

500-700? Maybe a little more since a buyer can see it run.

 

So is it a 401 or a 425?

 

Thanks jeffery. If I sell the junk I got on C/L, Ill keep it. My job sometimes is feast or famine. I didnt need to spend the $ on the Merc this time home but I WAS NOT missing that!! The guy is fedex-ing to me a box fulla pics docs and even a vid of it beating a boss 302. cant wait!

 

its a 401. Buick Identified them by their torque numbers and this is the 425 ft/lbs version