as far as i know the diff' 'tween the 240 & 280 are really minimal in weight, but major in suspension and strenght, but that set aside, i dont care what vildini said u cant compare the sr20 to the rb25, if im wrong then put a sylvia vs a skyline
if ur goal is only 400hp dont bother with the rb26 and roll with the rb25det u'll save alot of time and money, also u dont have 2 wait on mckinney 2 come with a kit everything u need is out there now if u look
i just realized that there is a typo on the thread it should be 450-75 500 hp being the limit as ive read is also the safe limit on stock internals of the 25det, i do have the 90mm t-body and in the works of getting the "greedy" intake the cooler is fairly large and ended up getting the gt35r, the missing ingredient is the correct size injectors for my goal