Stock Cam Timing - What is Centerline spec?

[VR4 Kev]

I have been digging around the past few days and have not been able to come up with a clear answer as to what our stock cam centerlines are.

I have read specs of 108 degrees for both intake and exhaust cams
I have also read stock cams are retarded by 1.5 degrees pushing intake cam out to 109.5 degrees ATDC and pulling exhaust cam in to 106.5 degrees.
- Does anyone know if this retard is cut into the stock cam gears or built into the cam design?

Assuming a perfect engine, would setting cam gears to 0 degrees put them at 108 degrees centerlines or 109.5 degrees intake and 106.5 degrees exhaust?
- My best guess based on info I have found is this would result in 109.5 degrees intake centerline and 106.5 degrees exhaust centerline.


Sources:
Stealth 316 - 6G72 DOHC-Turbo Head Info (http://www.stealth316.com/2-headinfo.htm)
http://www.3sgto.org/turbo-engines-systems/8785-how-guide-degreeing-cams-6g72-w-pictures.html
http://www.3sgto.org/attachments/turbo-engines-systems/4855d1358009886-how-guide-degreeing-cams-6g72-w-pictures-j.-fast-designed-cam-calculator.zip

Thanks in advance!