Factory installed rear sport bumper??

[71CHEVYSHORTBED402]

I had to modify brackets to get this far, and want to check some things. At this point I'm doing this without a bed. Happy to say the modification appears to work, I'm mostly concerned about the pitch of the bumper.

Irony is I saw an example truck on the way to deliver the outer brackets for cuts this morning. Very cool C20 and nice OEM brackets. Though its bumper seemed to sit a pinch too low I think my pitch is good or close.

Hoping someone can measure where it's possible per the pictures below. In addition to that, if you can offer how far the top of the bumper sits above the frame rail that would be helpful as well. Mine is currently approx. 1/2" above the frame rails.

The fourth pic is for entertainment I've seen double tags, right packages with wrong parts etc. but never this.

Thank you


Edit: For whatever it's worth the pictures are for my bumper in it's most forward and highest position, pending any more mods. Yeah I have to do this again with the bed on, but it would nice to know I'm on the right track. That is unless you have OEM brackets available for a 2wd, SWB with leaf springs