Your best off adjusting/making one with the one you've already got.
Toyota wanted £125 for when when I tried to get on a couple of months ago. I ended up shortening and welding the one I already had to make it fit. Not to bad a job to do if you know someone who's good with a welder.
Could be a vac leak causing the bad idle. I've had a lot of trouble with a mates car I've been working on idling really badly due to all the vac lines being a mess. Would be worth checking them all as it would be an easy fix.
Price is now £4950 but the car will come on the team dynamic pro race 3's. I'll put some pics up of them on the car when I change the wheels over on the weekend.
Anybody know what a like new set of 15x7 Enkei rpf1 with Yokohama ado8r tyres are worth? Tyres still have loads of tread and there's barely a signal mark on the alloys.