<VV> 110hp with dual exhaust.

[N2VZD at aol.com]

yes you can feel the difference PERIOD!
 
just drive your car in , change over , then drive it out. you will feel the 
 difference right away.
even with 2 stock quiet mufflers.   just do not cut corners  on the muffler 
mount to the motor.
i have used 140 manifolds on most of my stuff .
if you want to try something before buying parts , just take the exhaust  
off and drive around the block.
aftyer you free up exhaust on most cars , you can safely add a little to  
main jets and timing to tweak it  even better.
regards, tim colson   
 done it many times!!  along with the headlights and  alternators.