you have trouble with the spark plug clearance, the boots need to be angle boots, one plug takes special skills to change, the boots are soooooo close to the headers watch for burnt up boots, someone makes a 'short' plug that fits, I think Acell maybe others.
There is good news though,
George Klass - RCI Custom Racing Headers
(909) 552-3690 - geoklass@yahoo.com
He is a member here and I believe a vendor too of some sort, I will be contacting him, my headers look like azz. Just my experience.