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Discussion Starter #1
what size exhaust are u guys runnin with your big blocks? helpin a friends make a twin turbo kit for his back half monza ...i was thinkin 4 inch would be more then enough for the twin garret 91s we have for it.....motor is a 540 with brodix big duke heads ...also what size tubing u running from your header collecter to the turbo flange.....we were gonna use 3 inch stainless but have heard some guys use 3.5 inch......any help is appreciated
 
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