youd have a hard time with the surge tank. ADR says no fuel lines are allowed thorugh the cabin. I think you can get away with it if they are enclosed and dont leak fumes into he cabin.
why do you want a GTS-R? is it because of the little red R one the badge? just get yourself a normal import coupe, saves money, time, and the molestation of a collectors car
oh, and rb26det and rb26dett are the same engine
dont know about fancy later model skyline suspension, but if its anything like mcferson strut you should be able to press them out with a hydraulic press. its a good idea to freeze the new ones for a few hours before you put them in so that they are sligtly smaller and easier to get it.
if you do fit one, please have a switch on it so you can turn it off. unlilke the hundereds of spanner soccer mums driving kitted out prados with gear theyll never use. FCUK