Hemi Jack - Yes, I did add the torque boxes. Car is coded for S15 hemi suspension, so I guess it could have or should have come with them.
JS29R0B - For the undercoating I used the SEM truck bed liner. can be sprayed on nice and thick (put on 2 coats) and has a very nice texture.
VERY nice job! The car and color look awesome! As for the torque boxes, I have owned several '70 340/383 4-spd 'Cudas and all were A31/A36 axle pkg cars and none were equipped with torque boxes. I believe only the U, V and R-code cars came with them. However, I have seen many Los Angeles built 340 and 383 'Cudas with just the front torque boxes.
'70 Super Bee 440 6 pack 4-spd 4.10 Dana N96 EB5 ‘70 Super Bee 440 6 pack 4-spd 3.54 Dana FC7 ‘70 ‘Cuda 440+6bbl 4-spd 3.54 Dana N96 EB5 V1W