asp84 is in the park for parts around 3 to 4 K.
the engine can run anywhere you want depending on the amount of HP.
A remanufactured engine is, will it be what you want.
Are u looking for a stock engine or do you want a little more on the low end or maybe the top end ?
Determine what you are going to do with this vehicle and get an engine that will work for you. Too much HP and the tril ride becomes a problem, too much low end and the drag times go to heXX. Also, salvage yards have good low mileage motors less expensive than a rebuiilt. Mine was a 35000 mile job abd has run now for about 6+ years with out a problem, (Knock on Wood).
You can find any type of engine you can thing of, as long as you can pay for it.
The whole project along with a good output engine will run over the 8K mark, with a stock rebuild maybe a little less but not much.
One last word, think about the whole package, engine/gearing/tire size, before you buy an engine.
Good Luck,
Let the forum know where you go with this and why.