going gt35r on 1jz questions

Scott 88-1JZ

New Member
Dec 9, 2007
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California
Sup guys. I have a gt35r that I bought from a forum member here and I am getting ready to put it on. Parts that I have on hand to go with it are as follows,

gt35r
exhaust manifold
downpipe
oil feed line
oil drain adaptor -(bolts onto sump)
exhaust manifold studs/nuts for the lower exhaust side to clean shock tower
intake pipe with filter
tial 44 mm wastegate 15 lb spring
APEX AVCR + SAFC II
550cc mkiv injectors with resistor

Stuff I need
oil drain line
oil restrictor (may have come with feedline)
Wideband 02
BOV

Stuff my car has
MKIV TT fuel pump. The guy I bought the car from said that he installed this, I have yet to confrim.
Stock internal 1jz.
exhaust.
Greddy FMIC for 1jz
rebuilt R154 by MC and Action 6 puck ceramic/metallic disk with an ACT EXTREME 3000lb pressure plate from DM.

1. Should I purchase an adjustable fuel pressure regulator to put on now or can this wait?
2. Do I need to purchase any other supporting mods?
3. Is their an order you suggest installing everything or just throw it all in there?