Other than the cast sprayer bars is there anything different between the 2 heads? Are all the coolant lines and sensors still in the same place..

Also can you use the oil sprayer bars on top of the cam caps from a 2nd gen head in a 1st gen head?

 

as long as both heads have the same pr3 casting # they are the same, only a few exceptions apply like the type r being hand polished or whatever but if its the same casting than they are the same. either oil rails work

 

Cool.. Just didnt know if I could take the oil rails from the 2nd gen and install on the 1st gen..