Matt,
Four years ago this conversion with a fresh 3.2 was high 20's
In today's market I would expect it to bring about 50% of the cost of an original six in similar condition about 35-40.
Your Bumble Bee is a unique car and will always be more valuable in original condition (i.e. fix the FI correctly, repaint the car in the correct color and reinstall the four lug) that in and of itself is probably a six month project to source and test all of the components but well worth the effort IMHO.
If you want another project drop that 3.0 into one of your other cars, whichever one has the least amount of rust. As you know the engine swap is only the start of the project. Swap the engine, beef up the axles, then rebuild the transmission, next up better suspension and brakes......Enjoy