That one in that last picture is a ZF transaxle if you can find one be prepared to pay lots for it.
the way I look at transaxle solutions is as follows (been studying for 2 years but still might have missed something)
up to 400hp and 450nm on sticky tyres
2 options
audi 01e transaxle audi A8 strong box but not as strong as the renault one, expensive also but comes with option of 6 fwd speeds, lots of performance clutches made for the audi input splines so makes for easy adaption with an adaptor plate, Kennedy engineering has those.
audi 016 boxes from the 5000 series have also been used but all of which I know have broken the intermediate plates inbewteen the 2 casing halves
renault Un1, renault 25 V6 models and 21 Turbo 2wd
the UN1 can be adapted to the 1uz with of the shelv parts contact Dave Short @
[email protected]
boxes can be had quite cheaply over here in europe but are getting scarse over here also, if you have real trouble of finding one, I have a very good one lying in the garage of a 25 v6 turbo.
theres 2 weak links in the UN1 is the overhung 5th gear cluster, noone I know has mannaged to break one in any gear other than five, there's an undercut on the axle that carry's the primairy and thats where it breaks
also there's an undercut at where the input shaft goes over the diff, it sometimes breaks there also on sprint application. however over 500hp has been used extensivly in a friends GT40 with a pretty neat ford on quad webers,
for upgrades on the UN1 contact
www.un1.co.uk they made a nice input shaft for it. costly but good.
for everything over 400hp you might be better of with a porsche G50, (or a upgraded Un1) but those are getting rediculusly expensive nowadays.
these boxes are very strong, and there's 3 options for adaptorplates Kep dellow and another one which I can't remember, I'll be making my own with a quartermaster clutch if all goes to plan.
try looking for a G50/50 or G50/52 those are strongest, there's also the G60 series now but very expensive and not really known yet
Do not buy a 950 (number 9 instead of G) that's a non synchro box as is the 930 these are the predeccesors of the G50 series that came in the 911 turbo's also these are not as strong as the G series, a UN1 is probably stronger.
also do not be confused with some of the ebayers that offer a boxter transmission as a G50 because it's not, (that's a deriviate audi 01e)
there's since a few months also the quaife ZFQ, an exact replica of the ZF pantera box but manufactured new buy UK company Quaife. these are also pretty expensive but capable of surviving the strongest 1uzfe on the board,
other options are offcourse
CIMA, Xtrac, Ricardo, Hewland lg600, Drenth, Elite transmissions, mendeola, or Sadev, but be prepared to pay up, you'd get the best of boxes though.
I know a way to get a rebuild CIMA at the moment 6 speed sequential rated to 700hp but it's expensive at 12.000euro's = $20.000aus + shipping
that's the same box as the gumpert apollo has.
other usefull links for the un1 and it's measurements surf here.
http://lextreme.com/forums/showthread.php?t=5166
euuhmm yeah that's about it
Grtz Thomas and happy trans hunting!
edit the Wanni lambo is talking about is in fact Wanni Albertini the president and chief desinger of the Gearfox company, he desinged the Enzo box, mosler M900 gumpert apollo etc etc etc etc etc and is probably one of the most educated people the planet has regarding gearbox desing. gearfox = Cima btw
