Thought I'd share the specs of what parts I'll be using in my kit. This application is for the Gen 2 3SGTE block.
-4 AN Turbo Oil Feed Line:
-EAR-320104ERL Fitting, Hose End, Straight, -4 AN, 1/8 NPT, Aluminum, Red/Blue Anodized
-EAR-309104ERL Fitting, Hose End, Auto-Fit, 90 Degree, -4 AN Hose to Female -4 AN, Aluminum, Red/Blue Anodized
-EAR-350304ERL Hose, Pro-Lite 350, Braided Nylon, -4 AN, 3 ft. Length
I chose NOT to go with KO's oil feed adapter, instead I am using JP Autoworks oil feed adapter. It comes in a -4 AN fitting unlike the KO -3 AN fitting. I also chose to go with -4 AN line instead of the -3 AN line because the Pro-Lite 350 hoses only go as small as -4 AN - among other reasons...
-12 AN Turbo Oil Return Line:
-EAR-809112ERL Fitting, Hose End, Swivel Seal, 90 Degree, -12 AN Hose to Female -12 AN, Aluminum, Red/Blue anodized
-EAR-820112ERL Fitting, Hose End, Swivel Seal, Straight, -12 AN Hose to Male 3/4 in. NPT, Aluminum, Red/Blue anodized
-EAR-350312ERL Hose, Pro-Lite 350, Braided Nylon, -12 AN, 3 ft. Length
I WILL still have to use KO's oil return adapter though as I cant find anyone else that carries the fitting in a -12 AN.
Alternatively if you wanted to use both of KO's adapters the parts list would look something like this.
-3 AN Oil Feed Line:
-NOS-17955NOS Fitting, Straight, -3 AN Male to 1/4 in. NPT Male, Aluminum, Blue anodized
-EAR-600103ERL Fitting, Hose End, Speed-Seal, Straight, -3 AN Hose to Female -3 AN, Steel, Zinc Plated
-EAR-609233ERL Fitting, Hose End, 90 Degree, -3 AN, Speed-Seal, Aluminum, Red/Blue anodized
-EAR-303003ERL Hose, Auto-Flex, Braided Stainless Steel, -3 AN, 3 ft. Length
Some other food for thought - if you are looking for a replacememnt banjo bolt for the GEN 3 3SGTE again Earl's Performance Plumbing has this one:
-EAR-997591ERL Banjo bolt, 12mm x 1.25, Aluminum, Blue anodized
If you are purchasing the Rabidchimp oil line kit and need the reducer/adapter for the KO oil return fitting this is the part:
AER-FBM2422 Fitting, Flare Reducer, Female -12 AN to Male -10 AN, Steel
If you are purchasing the Rabidchimp oil line kit and need the -10 AN oil return fitting this is the part:
http://www.jpautoworks.com/toyota_mr2.htm
Additionaly they also sell a -4 AN oil feed adapter for the gen 2 3SGTE block.
Im still looking into what it it will take to make a oil feed fitting for the Gen 1 3SGTE block but I should have a solution in a couple of days.
Im still waiting on the turbo oil flanges to be made, my machinist is making me a sample piece now. However you could use your stock turbo oil flange...requires you to cut the existing line off and tap the holes to the correct thread of the fittings that you use for oil feed/return.