I built my 54 HEMI for under $5,000 complete. Junkyard engine, then added new carbs, intake, cam, lifters, pushrods, pistons, rings, bearings, valves, valve job,headers, oil pump, Joe Hunt mag and the lightweight aluminum stuff for front of engine. A little shopping, but most from Hot Heads.
BUT then again, you could bolt a set of hemi valve covers on a SBC and be like the other wannabes. Saw 3 of these at the Rumble last year. Chevies wanting to be HEMIs. Ever see a HEMI wanting to be a chevy?