It was the 1650th split-window coupe body built at St. Louis, which puts it around VIN 3000, built during the first week in November, 1962 or thereabouts; there will be a two-digit letter-number body build date code just to the left of "Detroit" on the trim tag which will nail it down.
The 912A paint code says it was Medium Silver Blue, but you need to check again on the Trim Code - there was no "419", but there was a "490", followed by one or two letters.
The original VIN plate was spot-welded to the brace below the glove box, just outboard of the trim tag.
The 1963 is a major challenge for a correct restoration, as it has hundreds of one-year-only parts, many of which are not reproduced due to the low market volume for them. Your friend needs four publications immediately:
The NCRS 1963-64 Corvette Technical Manual & Judging Guide
The 1963 Corvette Assembly Instruction Manual
The 1963 Corvette Shop Manual
Noland Adams' Corvette Restoration & Technical Guide, Vol. II (1963-67)
The first three are available from the NCRS on-line store at
www.ncrs.org , and the last one is sold by most of the Corvette resto parts suppliers (or from Noland himself at
nolandadams@internet49.com ).
I'd also recommend he join the NCRS (he can join on-line at the NCRS site above), then join his local NCRS chapter - he can find it under "Contacts" at the NCRS site. He's going to need lots of information and help to restore a '63, and that's what the NCRS is all about.