Why is it on a Salvage title? You need to know what condemned it and look very closely at that to decide for yourself. If it was a flood vehicle walk away, it'll be forever having electrical problems. If it was a fire vehicle it may be OK or it may stink like fire the rest of it's life. If it's got frame damage be careful, it could have issues eating tires due to uncorrectable alignment issues or it may be downright unsafe if the repairs were done incorrectly.
Also that 4.7 has timing chain, sludge, and rocker arm/rocker tower issues at higher miles.
Also that 4.7 has timing chain, sludge, and rocker arm/rocker tower issues at higher miles.