link to the rats omega here. It is in Norwegian but google can translate.
http://www.rats.no/omega_tg.html1000bhp is the associated head line on you tube or somewhere iirc.
The project was taken on as a show case for the company to advertise its transmission service. Hence big bhp to prove their whole transmission could take the power.
Omega used for slippery shape.(gls i think)
V8 was a battle due to size of the lump and involved cutting the chassis to make room for the back 2 pots, junking the stock stearing linkage as it was in the way, used something off a nissan as more compact i beleive. But very tight fit to avoid bump steer, which was the challenge to get the front to work.
Dif has its own cooler and appears to be the limiting factor in transmitting that amount of hoof.
Project took over a year due to solving issues and sourcing parts, and thats with major facilitess available. Big job.
Also think there is a v8 omega running in a British championship somewhere. A member here i beleive.