im new into this bigmarc,but my damon just purs,i dont put alot of miles on it,but i like it,Ford is a good chassis,My friend has been a ford mechanic for 50 yrs,i got his thoughts for this motor and said no worries great motor.that was good enough for me ,and another friend worked at the ford plant and was a mechanic also and had good things to say about it.hope this helps you,i wouldnt worry