I agree, IMO, a 2.5/4 or 3/5 drop works best on these trucks...the former for more stock-appearing trucks (like mine, heh...full chrome / badging, etc) and the latter for more modded ones (roll pans, shaved badges, etc).
Though that does look cool...
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Project 1970 - soon to be seen at
http://milhouse.treylis.org:81/