Selling question

I am switching projects yet again, one day I'll get one done and then hopefully keep it for a while.

Anyway, I will be selling an engine that I've had all of the machine work done on and have gathered almost all of the parts for. My dilemma is whether I should now part it out, sell it complete unassembled, or build it and sell it. I have quite a bit invested in this motor and would like to recoup as much as possible.

It is a 69 340 with 'x' heads

I appreciate any advice. This is not intended to be a for sale ad so pictures, price, and further details are not appropriate here. Thanks!