I agree with Jason. I would rebuild it 100% stock and do a good job keeping all the box flaps of all the parts your engine builder used. In addition to the box flaps identifying the parts used have your engine builder detail out what he did, and of course keep all the receipts. When I had my 67 Vette engine rebuilt I got the above and a worksheet from the builder.
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65 Corvette Coupe L78
67 427/390 Vette Coupe unrestored
67 L-79 Vette roadster (Top Flight)
69 L71 Roadster Survivor
69 L46 Roadster Survivor (Sold)
69 Z/28 RS (Sold)
69 Dodge Charger R/T
70 W30 442 Auto Air Survivor
2016 Z06 Coupe M7
70 AAR Cuda (Sold)
69 L78 Chevelle (Sold)
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