205rwkw was made on an rb20, as the injectors and afm were maxxed out.
basically a direct bolt on to an rb20, just need to grind off the heatshield bolt thread on the exhaust manifold to clear teh compressor.
the standard oil line can be used, but have to loop or plug up the water line as its only oil cooled, like the sliding highflows.
power rating is 430hp, so should be pretty darn responsive on the rb25