No..That engine isn't an Rb25..The RB25 comes stock in ER34's..but that egine is a Vq35..The engine from a 350z...You can tell by the engine's shape that it's a V6..not an I6...And te Vq35 is the only GOOD v6 swap for the Skyline that is semi-popular at this point in time
The D1 i went to was just a US driver qualifying round. it was only held for one day hehe. The one in august, im going to that one too (i plan to bring a digital camcorder, and once again my digital camera), the events should take place over a span of 2 days.