4.0 rebuild replace

Hey everyone, I bought myself a 1998 ranger xlt 4x4 about a year and a half ago. I put 32's on it, a flowmaster 10 single to dual, and a cold air intake, but that's about all. Recently, it started to have very little power while accelerating and then I noticed white smoke coming from the...

So I have a 2002 4.0 and im 90% sure it has a cracked head. Coolant smells like exhaust and keeps blowing radiators. I used some head gasket sealer in the coolant and that seemed to work for a couple months but its time for a permanent fix. The truck has about 270k miles on it so I was looking...