I'm not sure I completely understand what you mean, if you're looking for TRD boost gauge good luck, I ended up putting in an Autometer and it's been great so far!
Any boost gauge will work but no there is no 4Runner specific boost gauge. Look at Cravenspeed for a mounting solution. Speedhut can get close to Toyota gauge font and writing. You can get them to put "RTT Brah" on the face if you like.
Really though a boost gauge is cool to look at but more of a diagnostic tool.