torq conv.id and value

I know what you mean a body joe nobody in their right mind is going to pay for something when they dont know what their getting. .I thought that kind of unprofessional to use paint stick to id it but thats what i got. i thought i had to give it a lot of gas to move the car. .This is an ebay car im trying to trade of unwanted parts to build it the way i want it (4spd) Its got 5/16th bolts the barrel is 9inchs the only thing stamped on it is 983 and Do4 its for an internaly balanced moter i was told 3000 but the writing looks like 5000.I heard theirs a place in canton that has a dyno typ machine they can put it on to test it maybe i should go for a ride and get it dockumented.