overkill is some of if not the best mail order tunes. they go much farther into detail with the tunes than anybody else.
i have talked to will countless times. every time i had an email back that day, sometimes 15mins later. and it was not always pcm related. he helped me with a header install one time.
i have also emailed zzp and got **** 3 word answers, then after a 4-5 emails i would get the answer i was looking for but it was still very brief.
if you are willing to wait, the pcm is worth it.
