Probably $13,000-15000 rough estimate drive-train alone done RIGHT. People do not realize to eek the extra 50rwhp out of the big engine you have to spend some bucks. It is not just plop in an engine for 5-6k, you need to sure the body up, you need a trans to support it, you want good top end? you need big $$ parts, period. Long tubes install $1200, long tubes and accessories to put on $1000, engine $6000, trans $2000,
suspension $$?, Brakes to STOP it, ... etc.
Want to go power adder? Sure, same deal, and it will all add up. Getting used parts? Not me..no guarantees. All new. Take short cuts for less? sure...maybe watch your car blow up. PA to old engine? sure...not me, I wanted new everything so I dont have to worry.
It goes on.. want no drone? $400 mufflers. Want traction? Get new tires $600,
panhard bar $400, lcas..sway bars, tq boxes welded...labor $$. Am I upset? No. its money thron in from other cars and recycled. But I had no idea how much.