69 L78 Nova

[sztuty]

Marlin
I own a 68L78 Nova that I researched heavily so have some insight
The block is T1224JH, it has been bored but never decked-the current owner built the block 7 years ago (2300 miles)
The build date on the trim tag is 2nd week of Jan
The order sheet from the dealer reads as 4:88 posi requested, but the rear end code in the car is BM which I understand is a 3:31-do you think chev would ever use that housing as opposed to what is documented (I believe a BX code) and 4:88 gear it? Perhaps anything is possible?
The body is truly mint-I am a picky guy, and all the panels align extreemely well for a shaky 2, very straight, but the paint job quality is fair (way to much dust in the clear)
Has all the BB stuff it should-for all I know there is abuild sheet under the seat?
The cars stance has been dropped, and like a said before it has cheesy 90's touches
Any Thoughts?-I just didn't feel that taking pics would be right in this instance
Ty