If I'm remembering correctly i had to open the the steering joint very little. I used sand paper on a dremel tool. I did drill the steering joint and used the factory pin. It was too long so I cut off the extra. I wanted the have the option to put it back to stock if I wanted to.
Now, just for the record.....are those the smaller hole manifolds, at least that's what they look like??? If I knew the casting number I would know for sure. If they are the large hole manifolds you have a great combination there!!!
