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If you wanted to save weight in the back you could put a trailer brake axle. They are available in 1,350lb to 7,000+lb capacity.
The smallest capacity brake axles are only electric as far as I know. The 3,500lb axles and larger can be electric or hydraulic.
Only problem is I just don't think an electric trailer brake axle on a truck would pass a vehicle inspection.
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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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