is egr valve flange the same on e and de ?

[180sx]

also anyone swapped axternall wastegate after having internal one??? how do u like the diference?anyone using e-manage ? how is that vs safc ii i know its more $$$ with all the harnesses u have to buy besisdes the main unit ? but am i better off with safc's and some ignition timing apexi controler to run 460cc outta rx 7 ??with just t25 for now.