[DonRotolo]

They are not calling you back, or quoting high prices, because you want only one. It is not worth their time and effort for a one-off like that.

Not to mention, now you get to see that this stuff is expensive. I coudn't open your PDF, but if it looks like a typical chassis, it might cost something around $500 for laser cutting and bending.

For that kind of money, get out the drills, metal shears and bending brakes and go wild...