rebuilding cab floor / firewall?

What's up, I have a 98 ford ranger w/a 4 1/4" bodydrop. This winter I going to rebuiild the frame from the firewall back to regain some leg room so I can drive it more. My question is about the floor , firewall and backwall. I was just going to cut it out and rebuild it all but was wondering what the best way to do that would be? I was thinking about building the base of the floor out of 1" square 14 or 11 ga tube and then using 11ga sheet for the floor and 16 ga sheet for the back wall. Should this work, should I need a heavier guage steel or does anyone else have a better suggestion? Thanks for the help, Charlie

the 1" square tubing sounds about right but 11 ga for the floor sounds a bit much if u reinforce it with the right amount of square tubing I would think at most 14 ga and 16 for the back wall would be fine then u gotta build your transmission hump in the middlewhile building the floor then skin it with your sheet metaljust make sure to also mark your body mounts and make sure it lines back up before u re-weld em otherwise u gotta clusterf*ck!..lol nah that's all I can think of right now but are you gonna rebuild your firewall as well? u said back wall and I kinda got confused.Give er hell matey

yes , the firewall too. Just trying to get as much legroom as possible with the rebuild. The firewall has been rebuilt to fit 20s, so there isnt much left thats original. Just figured skinning it all would look cleanest. any other advice.

Thanks, Charlie

just get smaller seats??