Get something like this
https://www.tetongravity.com/images/...266__forum.jpg
This is a truck. 12-13 mpg, full time 4wd with locking center diff and lsd in the rear. I bought this for $400 with 70k original miles. Rebuilt the trans and got a new torque converter. Changed some gaskets, new water pump, alternator, oil sender, rebuilt the PS pump, shocks all around with new front leafs and new tie rod/drag link ends. New 31x10.5 Hankook Dynapro ATMs. This thing is clean, drives like new and I have about $3200 into it total and it will outlast me.
Oh yeah, new Magnaflow muffler and 3" exhaust, this thing is torquey as hell for a 318, zero emissions equipments except for the PCV.