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cole30 06-11-2009, 07:02 PM Hey guys, I was going to put a 4" to 6" black mbrp black stack in this weekend. I was wondering can I get away with putting a 4 1/4" hole in my bed or do I have to put a 4 1/2" inch hole in it? I am trying to stay away from the exhaust banging against the bed :eek:. cole30 06-11-2009, 10:15 PM ? dieseldave01 06-11-2009, 10:58 PM my 5 inch pipe fits fairly tight, and i get no rubbing cole30 06-11-2009, 11:09 PM So for your 5" what size did you drill your hole? dieseldave01 06-11-2009, 11:43 PM 5 inch Tyler@MPF 06-12-2009, 08:06 AM When I did my 4-6", I did a 4-1/4" hole and it was tight. I did however have the 4" od side in the hole. Tyler MPF cole30 06-12-2009, 09:58 AM K thanks guys, I think I am going to go with a 4 1/4. BIGRED08 06-12-2009, 11:03 AM i drilled a 5 inch for 4 inch pipe. works fine. varty yo 06-12-2009, 05:18 PM drill a 4 1/4 first and see if its too tight. you can always make it bigger. volumejunkie 06-13-2009, 02:47 PM Just use rubber edge gaurd around the whole and it wont make any noise if it ever hits the bed. cole30 06-14-2009, 11:32 AM I ended up using a 4" hole saw worked perfect. | ||