I can't find "BT" in any of my books? What assembly plant is this? It's on a 1970 LS6.The vin and the build sheet say Arlington "R"?

70-13637 BT08975 BDY

756 78 78

02C015

BT is Arlington on the Cowl tag
Check it out on Dale's site:

http://www.chevellestuff.com/1970/tags.htm (http://www.chevellestuff.com/1970/tags.htm)

756 = Black vinyl bucket seats 78 = Black Cherry paint
NICE!!

Dan