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I just told you the manufacturer name and description of the part you need for your JDM 2JZ. Here it is again....

USDM water pump + USDM pulley + USDM serpentine belt + e-fans/tt-clutchfan setup = call it a day.

Neither a USDM 2JZ nor a 1JZ downpipe will fit onto a JDM 2JZ y-pipe. Your best bet is to go on ebay and find the brand Autobahn88 who makes a "2JZ Decat Front Pipe". I ended up buying a custom made one from someone going single on supraforums for dirt cheap.

Possible head gasket leak?

The 7M plugs themselves won't fit into the JZ sensor unless you use JZ plugs and rewire it into your 7M harness. P.S. I have a set of 7M knock sensors for sale in my MKIII Parts F/S thread...

The reason you have an issue with your tach is because the NA gets an analog signal from the distributor while the turbos get a digital one from the Camshaft Position Sensor. You actually need to either swap a turbo tach in or get a tach converter wired in.

YES!!!!!!!! Go set your TPS continuity/discontinuity for closed throttle so your ECU doesn't give you default limp values due to the TPS error and then come back if you still have problems. This will help, http://mkiv.supras.org.nz/articles/engine_2_41.htm

Try www.bullseyepower.com. They make custom housings and all the DSM guys get theirs from them.

I just tested the drill bit, stud, and tap through a stock manifold and they pass through fine.

I heard it's nearly impossible for the one by the firewall. I happen to have this kit for sale since I never used it and went 2JZ. The anti-seize and cutting fluid are also included but not pictured. http://www.supramania.com/forums/showthread.php?134105-Driftmotion-7-16-quot-Helicoil-kit

^ This. The higher the octane, the more resistant it is to igniting prematurely due to heat. You want higher octane in turbo charged engines especially if running more boost to avoid predetonation and damaging the engine.

All 7M knock sensors are the same.

I think he's asking about a 1JZ...400rwhp is easily doable on a USDM 2JZ with BPU...not so much on a 1JZ

I think you mean the DM 67mm not "trim". A 67mm and 600hp is way too laggy and too much power for drifting unless you want to do nothing but spin out on some mega donuts. You want quick spool and more manageable power for drifting.

Yes you need a rear sump conversion if you're dropping it into a Supra because your steering rack/crossmember is in the way of the front sump. You need to get a JZ W58 bellhousing and W58 (non-turbo MKIV supra) flywheel if you want to use your W58 transmission. If the flywheel you bought is off...

It's common to have either an alternator drop down bracket to keep A/C or have a custom bracket to delete the A/C and relocate the alternator to the A/C position. I have a 2JZ converted FFIM and drop down bracket for sale in the for sale section...

If anyone is looking for big 7M power parts, I'm getting rid of everything 7M. Essentially I have 2 .020" over longblocks and a stock bore empty block. Check out my f/s threads. http://www.supramania.com/forums/showthread.php?134253-500-hp-Engine-management-Turbo-IIntake-amp-Exhaust-package...

You're better off saving your money and doing the swap yourself. If you have an 89+, the swap is stupid-easy.

Lots of guys on the IS forums seem to do fine up to 600rwhp. I've pushed mine over 400rwhp and thanks to my crappy wastegate spiked to 22psi i.e. possibly 450+. I may also sell mine and return to stock since they still work and I'm needing to fund my 1jz Cressy build.

You're correct. For some reason I had a brain fart and thought my rusty pan wasn't steel. My bad for misinforming anyone reading this thread.