I am looking at getting my head ported on my 1997 motor but they are the 561's which are not worth porting. Are the heads from 93 through 97 all interchangable? Can I take a set of 93' (10128374 casting #) heads and have them ported for my 97?
Thanks!

 

I answered my own questions, which would be; yes, & yes. My first search did not get it but my second effort into the wealth of knowledge in this site was more fruitful.

 

To reassure you.. yes... and yes.

 

Thanks Javier97!!