Newb Questions About Head Mods For Rb25det Onto Rb30

[JVDSKYRINE]

Hey I had an RB20det skyline with 250whp in all just minor bolt ons. after about 3.5 years I finally sold it and started my RB30det S14 project.

I have spool rods

Tomei procams 262 and 270 cams

custom JE pistons

custom crank collar

N1 water and oil pump

ATI harmonic dampener

upgraded springs and retainers

jun cam gears

ARP studs on everything

ACL bearings on everything

and will be tuning with Haltech E8

I am really trying to understand the VVt. If I have changed the cams and everything else should I be running the VVT? is it needed to make the car run? and also if you are not using the VVT do you need to still be runnning oil to the vvt?

People also say we should be putting an oil return line does anyone have pics of what they have done?

thanks hopefully you guys can help me understand a little more about this process i feel like such an idiot but need a hand learning this or my engine will never be finished.