So since my post last week, the car is all buttoned up with the Fahey style track pipes now in place.
So far, I’m really glad I retained the stock resonators as its pretty fierce as it idles and once north of 4300 rpms, its just crazy. Loud, but the good kind. It sounds tuned.
Cabin noise is only a tad higher, but no drone whatsoever, and the stereo can still be enjoyed.