trying to decode my 69 rs z28

[70 ls6 convert]

I bought a 69 a year ago, and getting ready to restore it,has been sitting sence 1986,no motor or trans,yesterday i pulled the seats,and found some of those old beer tabs,and old change,it was kinda cool,im searching for a build sheet,its funny i never occured to me that rats could destroy them untell i pulled the rear seat,and found 100s of ,i think acorns?well anyway im having fun taking the car appart,and trying to document it,i took some pictures of it,but not sure how to attach them,any help would be awsome,thanks vin 124379n519306..i founf a date on the inside of the door pannel,8-13-68..i got a picture of the trim tag,il post when i figure it out. it says ,,,st6912437nor126297...next line tr711 57 57 pnt,,,next line 10 b...i fond numbers on the rear end#bu 100801 and the letter e is directly under the 100 numbers ,any help would be great thanks..