Each buyer has his own criteria for determining value, and some hardware will vary in value based on what region of the country its in. That being said, the numbers Brent put up are relatively realistic. BUT, you have to look at what you present through the eyes of a buyer to be realistic.
If you're not a well know rebuilder with a reputation, especially one worth preserving, then the buyers will put you in the same category as any other seller. If the engine is sitting on the floor, and you're un-willing/able to to fire it up, or allow the head and pan to be removed for thorough inspection, then it's functionally not much more valuable than a core engine. Yeah, you've got paperwork, but folks are wary of crooks in the hobby, and unless there is some way to differentiate yourself from those guys, you're selling from a disadvantage. You may know yourself to be honest, but how will the buyer know that. Many sellers will think, "I'm not going to take the head off a good running engine!", and the buyer is thinking "What's he hiding?". Just something to think about.
Just one example. A bit over a year ago I bought a complete yard drivable, bodyless restored chassis with a rebuilt engine, trans, and rear like you describe. Plus it had all new brakes, a radiator, and battery. The fasteners were all in original finish, i.e. it wasn't a quicky bomb can restoration. I was able to run and drive it to evaluate condition, not just trust the word of the seller. I was able to buy it for a bit less than what you're asking in your attached ad, most likely because the seller wasn't getting any potential buyers or I'd offered a bit more than any others. Was it "luck" or good timing on my part? Perhaps, or, more likely it's reflective of demand and trust from a buyers point of view. You're not crazy high on your asking price, but if you hear crickets, or get more than one offer well off your pricing then there's a message in that.