Hambone, On your K10 chassis, aren't the crossmember and the perches different due to the front axle and spring set up??? headscratch The spacers to the engine block for the upper half of the mount used in both the K10 and C10 designs seem to be the same when I compare pics.

~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)