I just finished swapping my 305 to a 350 out of a truck and i am still running 2 1/4 piping. i want to do a true dual off of the stock manifolds and dump them out of summits glass pack http://store.summitracing.com/partde...&autoview=skui plan on cutting the y pipe flanges off and running a 2.5 to 3" reducer backwards onto the stock pipes then run a 90 degree bent pipe to a 4 foot 3" pipe to the mufflers and dynomax turndown tips. my question is what size flange is coming out of the stock manifolds and what degree pipe bend will i have to run? will i have decent clearance for speed bumps?

 

haha, no