Just in progress of putting by 320 together again after the rebuild. Its crazy how much money I have put into it:
New parts(repop or nos): Bearings, pistons and rings, camchain, oil pump gears, rocker assembly(old shaft was in bad shape), valve springs, valve guides, gaskets, crankshaft(just 850 USD for that), rods, push rods
Machine work: Milled head and decked block, bored, regrind of crankshaft, valve job, regrind of camshaft(elgincams), milled exhaust manifold.
Improvements: -41 dual carb manifolds, full flow oil filter.
All engine parts including crankshaft, block and head was chemically stripped from rust and paint.
I have not calculated on it but I would guess its 5-6000 USD.