Open the doors and watch closely if they drop a bit.
Get a big screwdriver and poke arond the firewall where the kickdown switch is ( if it's auto) even if it's manual poke hard, if it goes thru ?????.
Poke the rocker panels and the bottom of the doors hard as well, if the screwdriver goes thru ???
Stick your head behind each front front wheel and poke your screwdriver at the panel that stops crap getting into the door pillar area, if it goes thru ???
Poke hard at the big box section where all the front suspension mounts, if it goes thru ????
Been there, done that, seen the movie and got the very expensive T shirt.