ISO - Tube Chassis For MT Build - 1st One

Hi all,

Just joined this site, wow, a wealth of info.

I have been building and racing Short Course trucks for a bit now, and my sons all have them as well but my youngest wants a monster truck that we can build together. As I am not a welder, wondering where I can get a tubed chassis to start this build. Would like to keep it as close to realistic as possible, any info appreciated.