I have the same problem with steering wheel is not centered to the seat. There is a steel support plate, that is welded under the floor, which is not wide enough to move the seat over. There is no easy way to move the seat over.
As far as the throttle pedal it depends whether bolts to the floor or is attached to the firewall with adjustable pedals (Kongsburg is the manufacturer)?. If it bolts to the floor you could move it over.
I had to replace my throttle pedal, so now it bolts to the floor now.
2007 Apex MDTS (425 hp) #75723
2007 Toyota 4-Runner
2014 Ram Laramie 3500