He's been using Yenko.net as a reference source for awhile now.I've seen his followers ask him specific questions on FBook,only to reply back to them in copy & paste verbatim,of what was already written about that same subject by other members here on this site years ago.
Bad punctuation & all.

So what’s the story with this Chevelle?

Further, if Patrick wouldn't have circled his wagons on this one, and instead asked some pertinent questions, he would have learned precisely what to look for in the documentation regarding a '69 Nova that was initially intended for a conversion - but wasn't. Like, an order form for a converted Nova (no VIN because it wasn't built yet, but the orig purchaser's name...) perhaps the notation where the original short block was to be credited against the purchase price... This isn't the first time we've heard this mantra!!

The Nova’s that we’re converted to a 427.... How many are around , the only one I can think of is Rally Green one that sold with a Yenko 69 Camaro

Of the 37, 8 are found. There is 1 later conversion, but that's another story...

Of the 8 found, 6 are believed to be 427 conversions

Of the 6 claimed to be converted
- 1 has good documentation (Yenko Bulletin, and vintage photo with 427 emblems)
- 2 have good photo documentation (original photos with 427 emblems and stripes, and original owner confirmation)
- 1 has decent heresay support, and emblem holes that matched up
- 2 have very little support to my knowledge

I think a lot of folks would be surprised to know how many cars were actually converted, there's more info out there than you think - for example, when someone sends you a copy of an original YENKO window stick for a Lemans Blue, 427 converted, 4 speed, 4.10 rear Nova sold new from Gates in Mishawauka....it's kind of a big deal!! Warren has nothing for this car, bummer :(

Some photo's of the 3 with good support...

This red one has the Yenko Bulletin, which IMHO is good documentation. Both RG ones have solid photo and original / vintage owner confirmation.

Great info Marlin!

I have a friend who took a brown colored Yenko sYc 427 Nova for a test drive. He could have bought it for like $275 down and then $121 a month. Only thing stopping him was the letter he received in the mail - draft notice! Then it was off to Germany to serve his country. He also knew Don personally as Don has / had family in the Clarion area.