need help have a question

[nathan ollila]

to make this short..both my 2.9 head where cracked..sent them in and found one good passenger side one at junk yard..had a hard time finding another one that wasnt cracked..anyway the guy at the head shop said it didnt matter pass or driver side head they where the same and interchangable..is that true?one side fuel valve is one the front and the other head there on the back if i flip it to fit the drivers side..so pretty much if i put them on the floor with the exsaust ports facing the same direction there identical..but i have to flip one around on the motor which makes the exsaust and fuel valves position oposite of the other side??is this right?

 

[adsm08]

Punctuation.

 

[nathan ollila]

are the heads interchangable? can i put a passenger side head off another truck and put it one the drivers side of another?