I was going to say that the EGR hole in the header is an M22x1.5 but someone beat me to it.
But for those that are real cheap like myself, you can the block off plates off gen1 and gen2 Rangers with the 2.9 and some gen1 Explorer 4.0s.
04 ZX3 RIP [Best Non-SVT FITF12][3/13 ROTM][7/14 ROTM][2014 ROTY][Best Engineered FF14]
01 SE The V8 Estate [Organizers Choice FF15]
02 SE The SVTedan
12 SE Hatch Sport & Winter Package, ST Front End