WHAT DO I USE TO STOCK FLOOR BODY DROP A 90-00 CHEVY\GMC 1500 CREW CAB

im wondering what to use to stock floor body drop my crew cab? 2x2 ?, 2x3 ?, 1/4 thick ?, 3/8 thick ? and what do i plate it with 3/16?
advice and pics would be awsome              im just guna stock floor under the cab then do a stock frame back hafe cuz i have a kp 6link

are you going to be towing with it? 

I use 3x4 with 3/16 wall. 

---------------------------------------------Originally posted by SIRSCRAPEALOTI use 3x4 with 3/16 wall. ---------------------------------------------3x4 ?  im bd'n to the doors

---------------------------------------------Originally posted by MazberryDelightare you going to be towing with it? ---------------------------------------------just from the back not 5th wheel style

---------------------------------------------Originally posted by DD PREZ---------------------------------------------Originally posted by SIRSCRAPEALOTI use 3x4 with 3/16 wall. ---------------------------------------------3x4 ?  im bd'n to the doors

This would have been somthing to mention when you asked what size tubing.  You could probly use 3x3 but I would use .250 wall.  ---------------------------------------------

---------------------------------------------Originally posted by ahab---------------------------------------------Originally posted by DD PREZ---------------------------------------------Originally posted by SIRSCRAPEALOTI use 3x4 with 3/16 wall. ---------------------------------------------3x4 ?  im bd'n to the doors

This would have been somthing to mention when you asked what size tubing.  You could probly use 3x3 but I would use .250 wall.  ------------------------------------------------------------------------------------------k i might not go to the doors   but what should i use either way   i was just thinkn if im guna do all this work i might as well just go 2 the doors idk

bump     more input   maby some pics pleaz thanx

Sounds to me like it's way over your head.
There is a lot of stuff needing fabbed and if right up front you have no ideaon metal to use, then it sounds like to much to handle.
Safety is a huge issue here.

3x3 .120 is good, .250 is better but 2x3 will work depending on bracing and over all use of vehicle. .

2x4 3/16" wall