My 99 3.9 has 2.5" in and out of the cat, I would guess yours is the same. I
have Flowmaster 50 Series SUV muffler on my truck (2.5" in 3" out), it has the
distinctive Flowmaster sound but is very quite going down the road with no
interior resonance.
Can't really help you on the rockers other than the cheap way out is the stamp
steel Viper rocker arms are a direct replacement for the 1.6's you have and are
1.7.
Dave Clement
99 SLT+ CC 4x4
In article <1c3.27100d40.2f992408@aol.com>, Ncfisher@aol.com writes:
>
> I want to get a hi-flo cat on ebay but I don't know what size to get. I am
> also going to get a new muffler and any suggestions would be great. I'm not
> interested in waking up the neighborhood just better performance and a nice
> quiet cab. Also I've thought about doing the 1.7 rocker arms, can i just get
the
> rocker arms or do I need to get the sets that come with the guideplates,
> studs, and pushrods? Or would i be better and easier off just getting a cam
with
> higher lift? Thanks for any help.
>
> 95 3.9
>
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