I fabricated a safety bracket that holds the 2-bar MAP sensor firmly in place should the "clip" let go. I've attached a pic below. I've got decades of experience building prototypes, so 3D bent metal straps are almost innate to my brain... You know what they say -- "experience" is when you don't get what you want (unfortunately). One of the aftermarket Slingshot suppliers could offer a nice security strap -- frustration free. Just bolt it on. Great peace of mind.
If people do want to fabricate one, I suggest mocking up a pattern using thick cardstock or paper which matches the thickness of the metal stock you'll use. Then leave a bit of extra length. Pre-drill the hole to the manifold bolt, but leave the hole for the throttle-body until everything is bent to shape. That way, you can drill the hole at the correct length to apply appropriate tension/clamping to the MAP sensor.
It's not the best pic -- but the area under the fuel manifold has a restricted view.
Hope this helps...