RalleyRed,
Hooker side mounts arent considered a performance boost over any other type of performance exhaust system, in fact they are less than some because of the diameter of the header primaries, and there are limitations regarding the type of mufflers available.
IMHO They would "not" be a deficit on your ZZ4 by any means. what they certainly do is change the profile and personality of the car .
I loved my 69 SB "before" I installed Hooker side Mounts. After, It was like a different car. Much more powerful looking and sounding, I was very favorably impressed with the install (in reality I didnt gain alot of power if any with them?). My car turned heads before the Hookers. It REALLY turns heads now. That isnt hugest on my list of considerations, but it was definitly a byproduct of the install.
Lots of folks run Side exhausts , Dont know of anyone who does and doesn't like them
I mean that wouldnt be a very good thing :L Its a major effort resulting in a dynamic car change.
Research..if the light comes on to have them, go for it, you wont be sorry..Corvette designed sidepipe option for a reason Hookers have sold jillions over many years, Why..:cool
Just read some other posts in this thread, so..
PS..People run hooker sidemounts on 500hp+ dragvettes, They use baffles in the side pipe..the reverse flows are just not the right way to muffle, a higher HP motor with these exhaust systems. My 2centavos.
JCL is a member of this forum he makes baffles for side mount systems..
His site has lots of info regarding them and performance, accoustics, ect..
http://www.spiralturbobaffles.com/customers.php
Heres some pics of my install..
http://www.weavermill.com/exhaust/hookers.htm
Heres some finished pics
http://www.weavermill.com/finish/finish.htm
TC