Well if you weren't in the peoples republic Illinois in ome of the smoggiest areas in the country I would say gut the emissions system and run an emissions gear free economy tune.
Make sure it's got cold air intake for summer and try a warm air intake for the winter.
Make sure the air filter stays clean.
Aero mods are a good idea since the van was likely designed for at least some mild off roading that would remove most aero mods hung down low.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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