nlzmo400r wrote:how is the 26 that much harder than teh 25? other than the two turbo's of course, i would just figure swap the twins for a larger single, and then drop it in, would that make it any easier?
The main problem is the two turbo's interfere with the steering column on a LHD S13 or S14. The other problems you run into are turbo piping. There is a lot more of it on the RB26. The RB25 and RB20 have similar piping for their single turbos, and it does not get in the way.
If you switch to a single top mounted turbo on the RB26, it makes things easier. However, "easy" is not a word to describe the swap.
Also, you must remember you will need an RB25 transmission no matter what, because the RB26 transmission is AWD and not useable on the S13/14.