the cold elimate glows is a dual stage glows. most likly it uses different glowplugs. single stage often uses 11-12v glows while dual stage uses 7-9v glows.
D22 ZD30 egr+butterfly mod, 2" lift extra leaf springs, enk-tek dump pipe, 2.5" exhaust.
D23 no mods.......yet.
single cab workhorse, to muddy to clean