So when I first looked at this, I was thinking that this mount is not built to last. I think you need more than just a piece of metal between both of those pieces of angle. There are 2 single points of failure there that could fail and you'd be stuck on the side of the road.
I'm no expert so I asked my friend who is a mechanical engineer and has forgotten more about welding and structural analysis than I'll ever know about welding and structural analysis and he felt the same way that this is a poor design. You should look into replacing that single piece of steel with some square tubing, or at least some C-channel and/or a lot more triangulating of the 2 angle brackets. (Replacing the angle with square tubing wouldn't be a bad idea either.) More like the e30v8 kit:

I'm no expert so I asked my friend who is a mechanical engineer and has forgotten more about welding and structural analysis than I'll ever know about welding and structural analysis and he felt the same way that this is a poor design. You should look into replacing that single piece of steel with some square tubing, or at least some C-channel and/or a lot more triangulating of the 2 angle brackets. (Replacing the angle with square tubing wouldn't be a bad idea either.) More like the e30v8 kit:
Comment