Just a personal note, I,ve got an 84 CJ7 that used to have the 258 in it with 4.10,s and a 3 speed TF999 auto running 35 BFG,s. On the highway it would rev at 60mph to 2400rpm. Against a headwind anything faster than 60 was impossible and it was always floored which doesn,t do much for mileage. Off road required low range in sand or rock just to be able to drive around. I have now installed a 304 V8 and expect the extra torque of the 50 cubic inch bigger motor to help a bit. Seriously consider the 4.56,s if you want to run 35,s.

84 CJ7 304 HEI 35 BFG,s rear dana 60 with detroit locker,Viar compressor, fibreglass body, 2 1/2 spring lift, TF999auto, Warn 8000 winch, Plus a cool little trailer on 35,s. JEEP stands for just empty every pocket