I bought these and they work great. These spacers are the exact same size as Bro-teks at a fraction of the price. https://www.amazon.com/gp/product/B013AD1KIE/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
Use these lug bolts...
Berco 40" 700423-2 I had to modify the mounting brackets quite a bit, but it turned out ok. Made some brackets to move the led's on the rops to the front of the cab, but haven't put them on yet.