Installing new floor pan, transmission tunnel and firewall
 

I would like to put this stuff in my 67 camaro. I don't have a clue as to the sequence of doing this or rather to use aluminum for the floor or steel. A real beginner. Any help would be appreciated.

IF YOU HAVE PATIENCE--WILL LISTEN TO OTHERS ADVICE AND NOT BE-- AFRAID OF GETTING DIRTY/CUT UP/AND SMASHED FINGERS ---YOU CAN DO IT AND BE HAPPY WITH YOUR WORK :lol: :shock:
DO NOT BE AFRAID TO ASK ??????????
LIVELY

x2
also i would suggest the steel and get it in 1/2 sections ie fronts and rears (with tunnels in) and brace doors and side to side to prevent body flexing

How do the floor pans attach to the frame or do I need to build lips out from the frame to attach them? Also do I do the firewall first? Thanks.

Is it still a unibody/subframe connector car or does it have a full chassis?
If it's unibody, I wouldn't cut out any of it unless you plan on welding in stock replacement parts because the floor is the frame from the front suframe back and any roll bar/cage is attached to it.
Why are you replacing the floor? Rust or weight? If it has a full chassis, and you plan on replacing the firewall, I'd do it first, then build the floor. It'll need aome sort of x-bracing under it for support and attachment.
Johnny

if using stock replaceents order them the over lay mark out the dementions then leave 1/8 or ore for final triming but make sure to brace up body. my opinion is pans first then fire wall

The frame/chassis is stock. The most important part to replace in reality is the transmission tunnel and the firewall. I can live with the floor pan. No rust.