I was reading back and saw the post where limequat asked how much I paid for the driveshaft. Then I proceeded to not answer the question, leaving him to go look up the price on driftmotion. The answer was $440. Sorry, limequat.
Costs so far, as rough estimates:
Bryans wonderful car: $5000 after deducting what I got for the engine/trans with twin turbo kit (and wheels)
1JZ spec twin clutch with GM plates: $1600
1JZ: $1200ish
JZ to R154 bellhousing: $350?
20k mile AR5 from 2WD chevy colorado: $500
Various stuff from driftmotion including remote oil cooler, lightweight pulleys, 2JZ water pump, fluidamper, ARP hardware, misc bolts, some AN fittings and fuel pressure regulator, the driveshaft ($440), throttle cable, serpentine belt, shift knob, and on and on...
Unfortunately even though I looked at the bills not too long ago I can't access them now since the old store website is gone. In my head I count about $1500 worth of stuff from driftmotion, though I forget whether I got the bellhousing listed above from them or somewhere else.
Welding supplies, metal, not including welder: $200
Mustang brake parts and adapter kit: $750
wheels: $800
Labor: what labor?
We'll leave out gas/bus tickets/other methods of getting out to work on it, drill bits, other tools, etc.
Estimated cost so far: $11,900
I don't think I'll be done until I've bought the equivalent of a small house in parts for it.