What's the Value of a 429CJ?

I'm looking at a 429 Cobra Jet Engine D00E-B, in storage complete engine. I'm trying to figure out its value, the owner wants $4000. original I don't think it has been worked on.

I just retired from the army and the Sergeant Major, "the Wife",
is letting me build a car. Im Looking at purchasing a Cobra kit car and putting in a big block Ford engine.

So I'm looking at using one of these engines a 429CJ, 429SCJ, 428CJ, 427 side oiler (first pick if a good price), 427 center oiler.

Anyone with an engine at a reasonable price please contact me!

Thanks

Another good FE site is www.fordfe.com Go for the 427 if you can swing it. But if you can find an old Ford 406 it will have the oil mods the early 427's had but with a 4.13 std 428 bore. Some of the 406's had cloverleafed cyl walls and can handle a 427 std bore. Some of the 406's also have the crossbolt knorbs to crossbolt the bottom end but you need the 427 maincaps. The 406 was only produced for a year so they are getting hard to find. I found mine for $1500 complete but .030 and needing a rebuild. Or if your really stuck on the 429/460 look at some of the crate motors Ford Motorsport is selling. Either way welcome to the madness. G.