Reply to "180 Deg Headers"

Yes Alan. Jack is absolutely correct agin.
I can only say; YES its worth all the hassles. Just from the sound point of view even. Absolutely addictive and totally diferent. To anything. And YES, I have pictures. YES u have to cut two small holes only in the inner panel. Easy. This is how the factory did it.
Do not be persauded to exit your mufflers out the central rear A/C outlet. This will cheat you of the sound as it should be heard. Like on the track at Valleluga when I heard my first Grp. 4.- (anyhow, how could you deprive the viewer of the sight of the cars-innards by running mufflers thru the outlet - A/C has been removed.)
I too have run my 'skinny-body' 76 Grp.4 Replica for many years like this. I have not found it nessesary to go to the lenthens Jack went regarding the 180 degree exhaust heat output, however I am running a very thin walled, Ceramic coated system (Hall P.)with the engine cover removed to accomodate the Webbers & 6inch. velocity stacks,(-Let the hot air out), aided by a pair of Hall's big 'Bunny-Eared' side - scoops replacing the rear qrt. windows. Will run 4x big K & N chrome-top airfilters soon now with the new motor coming.- Cant see past the Webbers anyhow as it is, so what the .......
Seems Gary Hall was right. Thye motor suffered very little appreciate valve or ring wear running the velocity stacks sans air-cleaners over the years. His big side- scoops did indeed change the air flow downwards and help the Webbers induct 'cleaner' air.
The combination of the Webbers howling and the 180 degree exh. wailling is to be heard. And NO,its not very loud at all. My system anyhow. ( one can of course just whip off the big mufflers and bolt on stingers or whatever for Track Day and really reach aural delights around the entire Track.) My system has the Hall 'swirled-core' mufflers, which are straight-thru but baffled........a bit heavy, but for street use, sound great.....I wont say it again. When all the bits are together again I'll make a sound clip & post it. Enjoy , tai.