The vast majority of 70's from that period I've seen were very much like the typical 69 Dearborn Mustangs and Cougars. Much like the pictures I posted of the 69 Shelby I'm working shown elsewhere here
1- Floor pans a variation of the batch color - Medium to dark gray with a tint towards blue or green.
Here are some 69 Dearborn pictures showing some of the vatiations
70 Dearborn with a very green tint2- Frame rails (front ones) and inner fender panels from about where the firewall is - forwards red oxide epoxy primer. NOTE - I do have pictures of one 70 Dearborn car sprayed with batch color from the firewall forward. (in the 117xxx range) but believe currently that this may just be an oddity and not typical
3- Rocker seam. seat belt anchors and quarter drops sealant applied after floor paint applied
4- Front wheelwells (wheel side)- Body color at the rear, red oxide (no body color or black) towards the middle (shock tower area), a little or allot of overspray from painting the inner aprons fender lip and the radiator support front face. This can extend rearward for a foot or so in some examples. Something like this (likely scrubbed some overspray off when I cleaned it). Sound deadener over some of the details
5 - Rear wheel wells are typical at all plants. Sound deadener before exterior body color. Covers approx 80% + of the wheel well surface with over spray (matching the spray pattern found on the wheel well) on rear frame rails (forward and rearward of the rear axle bumper mount), sometimes near rear outer seat belt anchor
Body color over most of this normally extending beyond the sound deadener overspray. We should not see ANY sound deadener over body color or pinch weld/wheel well paint.
6- Don't typically see sound deadener in the tunnel but from time to time you will find seam sealer at the floor to firewall seam above the front of the trans. Believe this was applied when the seam gap was too large to fill the void.
If the car was a Mach I then we have many more sound deadener patterns
7- Front wheel well sound deadener (like every year) was applied after the car was assembled (short of front wheels and tires)