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Hi guys, I know that question will sound fucking dumb to you, but, i just need to sumarize some information and stuff what will be needed for this, I was trying to find some exact howto (found only for sunny here), but i haven't succeeded... But i have only a few questions, so it will be really cool if someone more experienced can devote me a couple minutes 
So, I will get SR20VE negine, of course...
Then:
-some for cam switching - Greddy MSS, or this ?
Summit Racing SUM-830449-1 - Summit Racing® RPM-Activated Switches - Overview - SummitRacing.com
(any nice article/howto how to work with this ?)
-guess stock ecu is useless, so get calum ecu programmed for VE and for P11 ?
-also i suspect that i can use wiring harness from SR20DE ? (never found exact answer on this)
So this is for now all what i need to know...
thanks in advance...

So, I will get SR20VE negine, of course...

-some for cam switching - Greddy MSS, or this ?
Summit Racing SUM-830449-1 - Summit Racing® RPM-Activated Switches - Overview - SummitRacing.com
(any nice article/howto how to work with this ?)
-guess stock ecu is useless, so get calum ecu programmed for VE and for P11 ?
-also i suspect that i can use wiring harness from SR20DE ? (never found exact answer on this)
So this is for now all what i need to know...
thanks in advance...