I’m Having the same issue. I ordered AC Delcos PN 51922 from rock auto for my 1995 k2500 8600 gvwr utility body. To my surprise when I went to install them last night the bolt hole spacing on the top mounts too narrow.
The current shocks on the truck appear to be Monroe 58600 ST’S but rock auto lists the Monroe 58600’s on their website as “except 8600 gvwr”.
I’m kind of at a loss on what to buy, any help would be greatly appreciated!
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