I ran CIBIE Oscars on my bumper using simple thick brackets and they worked great. They bolted right to the upper bumper mount hole. Also later, I put CIBIE 35 lights on the bumper the way Stroppe used to(location). Still run those.
My other rig has old Marchals because a neighborhooder complained they couldn't see my turn signals with the Oscars on the WH / Prontofab front bumper. So I needed to run something low profile. They are off of a Tbird or SVO, or ford truck, and are surprisingly bright for what they are.