Fully Built 225 Slant Six Pricing Question

Hello! Long time reader, first time poster. I have a 225 Slant Six in my 1963 Dodge Dart that is quite built up, and I'm looking to sell it so I can trade up to a small block V8. The problem is, I have no idea what it's worth, and I feel like I'd get more value selling it as a whole, rather than parting it out (which will also take a lot longer).

Here are the details:
- 225 Slant Six Rebuilt about 15 years ago, but only driven about 10-15k miles since. (At most.) It sits a lot, job takes too much of my time.
- Bored 0.060 out, crank ground 0.10 under, decked, ported and polished, bigger valves, Isky cam (not sure which one).
- Jacobs Ignition
- Pertronix
- NGK Plugs
- Taylor Wires
- Holley 390 CFM 4 Barrel
- Offenhauser 4 Barrel Intake Manifold
- Headers
- Mini High-Torque Starter
- Lokar Throttle Cables
- K&N Air Filter
- Slight oil leak from the valve cover.
- Had a AAA inspection about 8 years ago, came back clean except the usual little leaks and creaks.
- It runs, but the carb needs a refresh, it didn't get driven much during the pandemic, so it sat for a bit.

So, the question is, about how much should I ask for the whole package?

Also, I have the original automatic torqueflite that was rebuilt about the same time. It runs and shifts fine, but has a small leak at the pan. What's it worth separately? As part a package with the engine?

Thanks!

View attachment 1716190308

View attachment 1716190309

View attachment 1716190310

View attachment 1716190311

View attachment 1716190312

View attachment 1716190313
I notice few willing to stick their toe in the water and give you a dollar number. I don't have that hesitation. But first I am not sure why you are selling a nice, unique, sorted out motor to try and tackle a common variety mild small block install with all those hassles. Having a buyer see/hear/drive it run is a huge plus/advantage to help sell. As a buyer I'd really like to know details on cam, CR, and pistons, but that is not a deal breaker.
I would suggest asking $4K as fair middle ground, anything $2K and below is worth just storing it, or calling me if that is not an option. It's a cool motor, you only need one buyer with cash.

Good Luck.