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Eliminate the emissions control garbage, if it has any, a 93 might have a soot trap. May have EGR.
Run a big exhaust, that doesn't hinder aerodynamics.
Big cold air intake with big air filter.
If it's going to be used on the highway mostly put the biggest turbo you can find on there.
The old 7L pickups had a small restrictive turbo for highway towing imo.
Then look at tractor trailers for aero mods.
Side skirt, moon hubs on the back, a boat tail if possible and a roof spoiler or something so that the air going over the cab doesn't ram straight into a flat wall.
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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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