WIW - not original 396

[runpasthefence]

Hey guys, I picked up a 1969 short fleet a couple of months ago with the intention of doing an LQ4 conversion.

The previous owner had it set up with a 396, however, the truck is not an orignal 396 truck. The engine runs very well, and likely modified. I don't really care to strip her down to find out what's been done.

So when I sell, what's a fair asking price for a great running 396 of unknown origin and modifications?

Thanks!