Advice and direction for 3.2 sohc

Noob question. New to this forum but not to cars, engines and forums in general. Just picked up a new to me 97 3.2 trooper. Shows all the signs of a blown head gasket (white smoke, losing coolant, misfire). Will do a compression test and pressurize the cooling system when I pick it up Friday with the truck and trailer. Comes withe a junkyard 110k mile engine with a noisy valvetrail-presumably rockers and shafts. Broadly speaking the fork in the road will most likely be a head gasket (hope heads aren't cracked) in the car or a rocker arm job on the junkyard engine and swap them... Before the question is asked-- It's worth spending a bit of money on, I got it super cheap, rust free, manual, 4wd is good, rest of drivetrain is good, body and interior are very good. Which direction? All suggestions appreciated.