The discos I made where nothing more than hardware I picked up from home depot. I used grade 8 7/16" clevis pins, I think 2 1/2" long if I remember right. Used grade 8 washers and cotter pins to hold them in. It was as easy as unbolting the bottom sway bar link and replacing the bolts with the clevis pins. When I go out I just pull the cotter pin, slide out the clevis and use paracord to tire the sway bar and links out of the way. It's cheap, easy and works, but if you do it you're gonna want to get in the habit of checking them once in a while. I usually take a peak every time I put gas in. Go figure the first time I didn't check them I lost one of the cotter pins and bent the clevis..
I don't get lost, just temporarily misplaced
'12 JK-built and wrecked
'89 XJ-work in progress