[Doublepumper]

I actually broke a rib working under the dash of my "46 pickup. Got wedged in between the door jamb and the seat riser. Now I remove the seat so that I don't have to work laying against the jamb. Add lots of padding the top edge of the riser and sit upside down off of it. Add plenty of light shining up under the dash and it makes it nearly bearable. Good luck!