Thank you guys for the replies. Its much appreciated; and yes a lot of Matador.
Went ahead and knocked out the passenger compartment last night. Overall, I am very happy with the condition of the floors considering the amount of caked on Texas and TN dirt. Next, I'll move my attentions back to the firewall and then on to the subframe.
Photos 380 - 381 - Finished pass compartment floor. After cleaning with the aforementioned process; I applied a healthy coat of Meguiar's #7. Oh and I received my plastic razorblades I ordered and they seem to work ok for the cleaning of dirt and grease but I'll put them to the test on removing heavier layers.