Buick Grand National Exhaust SLP

3" to y pipe to 2 1/2 dual Exhaust.

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Buick Grand National Exhaust SLP #2 ...
3" to Y pipe 2 1/2 SLP loudmouth mufflers.. hope u like!!!!!!!!





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1987 Buick Grand National Accelerating
Driving a 1987 87 buick grand national 0-125 @ a 100 degrees outside. Can't wait to see after Dyno tuning and on a cool day. ( kombucha...not beer!) Very fast about 600 -650 hp horsepower @ 20 psi.





1986 buick grand national flowmaster exhaust
My 1986 buick GN with a 3 inch down pipe cat removed going to a flowmaster muffler




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