383 commando ..whats it worth?

buddy of mine intro'd me to a guy today and this guy supposedly has a 383 commando short block there, he said he sent the heads out and the guy jacked them and told him they got stolen(this was a while ago) so no heads,he said he drove to conn to get the motor .He says he has a new cam, i think he said new intake, valvles and valve guides, he might have more but thats what i remember him saying.

so short block 383 (commando?) needs rebuild
valves, valve guides
intake and new cam

whats its worth? and are all the 383 heads the same? or will i have a hard time getting heads?

He said he would let it go for 800, however if its worth it I know i could get it for less due to my buddy being good frinds with him and we are going to do some powdercoating for him very soon as well.

So is it worth the 800 or more? not that ill pay that. but id like to know. thanks in advance.