I don't think the engine 427 vs 428 original or not is an issue though. Many of the originals had the 428 out in not time at all and a 427 installed in it's place. As it concerns the "conversion", yeah plenty of street cars went through that at some point in their life (street to SC). Value depreciation because of the conversion? Maybe with a car with some history, but 99% of the street cars had no history anyway. In this case, I doubt it makes much difference.
Asking to much at $700K plus? Hmmm, that's a tough one, if I was selling it I'd start there and entertain offers. How much they got in it doesn't matter when it comes to how much it's worth. It is a very clean clean nice car, could command top dollar on that alone.
I'd say in excess of a 1,000 man hours. Could be easily double that. At $100 an hour 2000 hours is $200,000 in labor. Typical English sports car, trashed, ground up resto takes about a 1,000 hours for an experienced shop. The labor rate for a GREAT Austin Healey mechanic I used on occasion in Honolulu was $125 an hour. I didn't use him often...
