I ordered the SPL 1 3/4" headers w/o air and with the single 3" out y-pipe. Then some 3" tubing, and finally a 3" glasspack which I'll put in the stock muffler location. I think this system is going to sound great on my 305. But really good once I get the new small block in there. I'll have it on my car in a week or 2.

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92 RS 305 TBI 5-speed
...no times yet
it'll do 145 mph though

 

sounds pretty decent I am looking at putting entire new exhaust on mine from the headers to tailpipe, I was looking at getting Hedmans, but am keeping my options open so can you give me a ballpark cost on your setup?

Thanks

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86 Camaro SC, 310, Edlebrock Intake and Carb, Flowtec Headers, Ported polished heads and intake. TH350 tranny, Jacobs Electronics Ignition.

 

Headers w/ Y-pipe: $350
Header installation kit: $50
10' of 3" tubing: $70
3" glasspack: $25

 

The setup sounds good with the exception of the Glasspack. Glasspacks are restrictive and IMHO I do not like the sound, I know you probally do not care what I think so do as you please. You can get a Flowtech 3in in/out for $13 dollars more through Kragen, and they actually flow pretty well. As far as the headers, they are pretty big for a 305, but you are on the right track planning ahead for a engine with more power. Good Luck

 

The glasspack may be a little restrictive but keep in mind those 2 1/4" collectors on the headers are what the main restriction will be. I think this system is going to sound really good.