The kit I got came with the extension! Hooke Road Wrangler JK Tailgate Table Camping Cargo Shelf Storage Rack Compatible with Jeep Wrangler JK 07-18 (Upgrade Extended Version) www.amazon.com/dp/B087CX2WW7/ref=cm_sw_r_cp_api_glt_fabc_HE2M067C6QT9NPCGWPZZ?_encoding=UTF8&psc=1
I just used a battery powered drill.. It did the job but required a lot of pushing to get through the metal if I had to do it over again I would use a corded drill or impact.
I bought a rivet kit with multiple sizes 3/32 in., 1/8 in., 5/32 in. and 3/16 although I don’t remember which one I used Here’s my kit www.harborfreight.com/3-in-1-riveter-kit-94100.html
