Here is a video on how I make a gusset from the MainHoop to the BPillar of the Subaru. This cage is 13/4" .120 wall DOM Tubing w/18 gauge gussets & MIG welded. Thanks for watching!

WARNING: I'm not trying to be reckless, I ALWAYS wear at least safety glasses when using cutoff wheels but often wear my welding helmet (on grind mode) or a face shield. NEVER STAND directly inline with the cutoff wheel, stand offset from the "line of fire" if it were to break/explode and come loose it'll be less likely to fly at your face, neck or body. I wear leather gloves too but wasn't during this demonstration due to handling a camera. I'm not trying to promote bad safety behavior, I said this is not for "newbies" but should have also mentioned NEVER buy China/Taiwan cheap brand cutoff wheels from places like Harbor Freight. Those are not nearly as quality and come apart (explode). I always buy quality Made in USA or alike brands that I know to be legitimate quality.