I don't have metal bending and cutting equipment. I tried to fab some small pieces in the past, and wasn't satisfied with the results.
cobrakiwi is able to produce the high level of finished product that I want. He at least left me the final fitting and riveting, but I had to twist his arm, LOL!
That battery tray mock up is simple and clean. I like it!
A few posts back in this thread show the fresh air tube hangers he fabbed. When he discovered I had used zip ties to hold the air tubes in place, he was polite in the way he told me my approach was sub-standard!!
David