yes, there are 2 different versions of the 255 fp.
As for the j-pipe, on the T-25, the turbo has an elbow that directs the piping toward the SMIC.
On a 14B/16G, the outlet points almost straight up therefore, you'll need to have a flanged elbow to direct the piping towards the intercooler. If you were just going to use a SMIC, you would have one that points towards the passenger side of the car. When using a FMIC, you'll need to have it face the drivers side to the inlet on the intercooler. The outlet is on the other side and you'll have a pretty straight shot for the upper intercooler pipe to head towards the throttle body.
Here is a pic of mine:


notice how the pipe comes out of the turbo almost straight up, hooks back down and then curves toward the drivers side of the car.

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-Tony <--- NOT asian.
'06 Wicked White EVO IX