Headers and exhaust

Looking for header suggestions, 1969 B-body w/power steering. I presently have a set of very old Doug Thorleys. They are past there prime, v.v.v.old. Looking for quality of build, easy access to all plugs , and in this case clearence around power steering box. Not looking to break the bank on headers ,....but ....not cheap *** set either. Also, advice on size of piping from collector to tail pipe, 2 1/2 or 3". Thanks in advance for any help offered.
Author: HWY100