Renix to H.O. question

I am putting a 95 motor in my 89. I realize I must keep all the renix sensors and it is recommended to go with the H.O. tubular manifold(stock header). My question is can I use the renix style manifold to retain the EGR pipe and O2 sensor or do I need to weld bungs into an H.O. style manifold?

I would stay with the Renix manifold..

If I'm not mistaken the bore on the intake ports on the h.o. head are larger then the renix manifold if you bore the manifold to taper out to the head you will have better airflow. They did it on trucks I'm sure there is something in the thread on here http://www.naxja.org/forum/showthread.php?t=950758&highlight=trucks