I wouldn't get that 2133 unless it's in a truggy. Also...side note...that pipe is thin/soft. Gets dented easy. Not as solid as thr 2166/2134 and 2099/2104
You can run REDS or OS. Same thing....TS4=P4 and TS3=P3.

Yea the picco plugs are hard to come by and are slightly smaller but I've run reds plugs with no problem. They have the same seat.