Yes. The underside of the car will be unpainted aluminum and rivets. Probably allen screws in the driver's floor section, if only to facilitate my own sorting it out, since the dang pedals are all being cobbled together from detritus by yrs truly. I will post photos of it (the belly pan) when I'm done, because it's going to look like $4 million and, realistically, almost no one will ever see it again.
Pedals, today at 1 pm: 
That's how they gotta be for the brake pedal to have 8 inches of throw, which is what's needed for the dual circuit master cylinder to function in the event of a bad circuit.
Here's a shot of the situation at 4:30, as I was getting ready to knock off: 
Basically made the whole front unit of the accelerator pedal system today, though almost none of the welding's done yet. Since I'm working from (a very few) photos and no technical drawings, I spent much of the day setting or holding parts near each other and guestimating sizes and distances. I think this is gonna work and look about right. I'll bench test it tomorrow, tack it together and test it in the car.
Livin' the goddamn dream over here!
