this thread made me chuckle so I'll toss this in for my contribution
D60 4:10 LS FF GM truck 8 lug 41:10 = 4:10
I'm also considering a 200-4R upgrade, considering
one of these from Art Carr here in town..
haven't had a chance to get over there yet, but I'll keep y'all posted if I find out anything of interest..
good luck!