If you want to purchase a harness, contact Tweak'd Performance. The guys there are very knowledgeable and stand behind their work 100%. I took my 1jz S14 there and had them build a one off tucked harness. And if im not mistaken they build harnesses for wiring specialties.
Tweak'd Performance: We specialize in building new wiring harnesses for engine swaps - located in Summerville, SC