Is this ultra rare or what?

[Chevymaster461]

So this 67 Chevy C20 CST been in my family since 68
I've looked up the vin an model number every thing checks out to factory but here's the list ( checked frame vin , cab vin ,spid vin an model # all match) I was told this is a one of a kind order made in 67 (could have been a dealer ship custom floor model)

Vin CE247Z157485
C- 4x2
E- v8 gas
2- 3/4 ton
4- pu cab an bed
7-1967
Z- Fremont ca
Last digits 157485 is production # (starts at 100001) so 57,485th one made
To what I read they only made 50,xxx of this type so how is it higher idk

model # CE20934 (from what I've read it should be CS for 67 an they didn't use CE till 68


paint code 06507AA ( I can't find any other with this paint code or this color) it's a light blue paint I've checked gm paint codes and they don't even look like this + factory option paints don't match any where close ( so was this a custom color order)

1967
C20
CST / no side markers , has CST lower trim , CST driver door badge an custom badge on pasanger side .. No badges on fender
Ho52 Detroit locked 4:57s
327 4 bolt main large journal (yes factory 327 4 bolt main)
Factory 4 barrel carb
Power steering
Heavy duty dual battery's
Heavy duty 61 amp alt
Turbo 400 granny low
Gun rack ( I know this is common)
Factory tac
Camper name plate
Tinted glass
Aux tanks (3 in total)
Deluxe air heater
Aux fuel filter
Aux HD rear spring
front and rear shock abs
Front stabilizer
Push button radio
Vinyl trim
Chromed hub caps
Small window ( I guess there where big window option for 67 befor it came standard )
Chrome front bumper and trim
HD step rear bumper

If any one has seen or herd of this let me know cause so far it looks like the only one of its kind I know my facts list are 100% true so don't post stuff like (oh they never did that your wrong blah blah blah) cause I'll lmfao cause like I said this is 100% factory an no the motor did not get journals enlarge or converted to 4 bolt main or a 4 barrel carb after it left the factory ... There's probably more I'm missing any help would be appreciated thanks .. Hope this is as rare as it seems