Im about to mount some balast and in reading the gcr i was not clear on the wording for placement. It says that the balast goes in the passenger footwell/seating area. but I was unclear of the sentence underlined below. can someone clarify whether i have to put it in the footwell or if i can mount back where the base of the seat had been. Thanks

"All ballast shall be located in the front passenger footwell/seating area, aft of the firewall and any footwell angle, and forward of the aft-edge of the forward-most passenger door opening, unless otherwsie specified on the vehicle’s spec line"