Opinions on this 4.3 exhaust??

[crossy's son]

One of my dad's friends wants a good sounding/performing exhaust on his 98 RCSB 1500 4.3 vortec. It runs pretty good now but he wants more, and said better sound/mpg would be awesome too :D (has stock exh. now)

He said he'll pay me to install it :D. I don't want too much fab work involved. He wants Dual split pipes. And he wants headers, high flow cat.

sooo....

Pacesetter headers. (probably end up gettin ceramic)
http://www.summitracing.com/parts/PSM-70-1321/


Magnaflow Y-pipe/converter. High flow
http://www.summitracing.com/parts/MPE-23457/

Dynomax Super turbo Dual catback
http://www.summitracing.com/parts/WLK-19302/?image=large

My question is, Do you think the Headers would go right up to the Y-pipe?? I mean the Y-pipe is direct replacement (if you have stock manifolds)...most shorty headers are manifold replacement and will go right up to the factory Y-pipe.

Don't tell me about a V8 swap.. Or shorties are a waste. Its not my truck. I'm doing some research for the guy and might make some money doing something i love to do :D

Thanks
Brandon

[crossy's son]

If anybody has any experience and can peice me together a relatively "bolt up" exhaust that'd be great... I have no experience with 4.3's and it sucks shopping for them in a fullsize.

The collector diameter on the headers is 2.5" which sounds big... and the magnalfow Y-pipe looks to have 2.25"

Whatever happened to the headers coming with the Y-pipe !!

[crossy's son]

bump

[SierraDan]

Might want to call Summit before you order anything to see if they can tell you the exact specs of the header collector size and y-pipe inlet size. At any rate, i'd go 2.5" to the muffler, 3" will be too large for a V6 as it's almost too large for my 305 and my low end torque decreased when I upsized my piping and a V6 in a full size truck needs all the torque it can get. Other that that, looks good but the Summit Turbo dual catback is cheaper.

[crossy's son]

Thanks! i may just give them a call tomorrow....

I need to find a pair of headers that come with the y-pipe....

and the truck has to have a cat to pass inspection.

[SierraDan]

If you can find a y-pipe without a cat, go for a Thunderbolt cat, best bang for the buck I can find.

[skylark]

No offense and I know the truck is not yours, but I've never heard a V6 with exhaust that doesn't sound raspy. Just my .02