Hey Daniel!
My Grounding was DIY. I got the Cables from Pasar Road, Amoured, nice orange once( Usually used for welding) with gold plated cable lugs. the grounding poingts that I used were
1. Directly from the ground cable from the battery.
2. Alternator
3. 4 points to the Engine Block ( at every sub component of the engine block)
4. Both sides of the absorber mounting frame ( where you install your upper roll stabillizers)
5. To the firewall
6. and lastly to the exhaust mounting.
The bad news is that once I did all this, my tempreature reading was reading at high.
Apparently my voltage before this was not enough to detect the actual temp. ( don't know if this is true). Before this it was slightly below middle. But got that fixed. changed the damn termo.