TORQUE BOXES ?

I can't imagine an order sheet with a torque box option since it's not a mere bolt on. As stated a brazillion times, some 340's came with 2 and some came with all 4. Both of my 'cuda 340's had/have all 4.

I was not on order form Factory 4 speed came with them . B Bodys Have them not sure if E Bodys do also
You could pickup the Torque Box plates from any Dealer parts department and weld them in. I bought both sets from Brewer Chrysler/Plymouth in Auburn WA and did them on a 1965 Dart GT that had a hot 318 with fenderwell headers. The headers required cutting out the front frame where the torque box covers so we had to add metal back in.

My 1965 Barracuda we also welded in 11 gauge plate and added frame connectors for the 383 Magnumn