turbo question

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i got a sr20det and one of the bolts broke that hold the turbo to the headers my question is im going to buy some arp bolts for teh headers and the turbo but i want to buy the bolts be for i take off the headers off and stuff so i can have them there and ready to put on if and one know the size would help i tried looking and calling and people say they dont have specs on it so let me know if u guys can help.....thanks ahead of time o beside the way my sr20det is a black top