The stock auto ECU will work fine.Originally Posted by Calais
Do you really need to change the dash?
Gearbox wise the R154 is about 3 times the price of the W5x. If it is staying NA then it is pretty well a no brainer -> W5x.
Gearbox is about $300->400.
Bellhousing prices vary, but I think they are around $500ish new from Toyota?
I also wouldn't bother changing the diff ratio.
You'll also need to sort out the tailshaft...
HTH
Cheers
Wilbo
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