As has been said earlier,the M-22 & 4.10 are probably original to this Nova,but the 350cid. block I suspect is not.
Wish he would just post it's pics,as he's posted pics of everything else..which may be why he isn't.

https://i.postimg.cc/G2QDPk3F/screenshot-7293.png

https://www.novaresource.org/axle.htm#1969

i just always thought they both would have to be in an l-78 car,he has posted pictures from block but i havent taken time to really look at them

i sold my 68 w/the ls6/winters heads i had listed here,id like to have a real ss small block car but i too think its overpriced.looks very sharp but just somehow looks way too overstated