After 30yrs build trucks & cars, I got LH and RH figured out. haha!
Jokes aside there is only one way these can go. Kinda like your shoes. Only go one way unless you're 3!
OK now jokes really aside..
Heres some pix...clamped them to one of my welding stands so both were on same level plane...
And the bottom plate at crossmember.
The one that looks straight actually has the lower plate welded off by 1/8 too