i've heard that the thunderbird exhaust is the go. is this true? i have extractors already on. where would i get a thunderbird and how much

Stan pobjoys racing engineering in coffs harbour uses them in his rebuilds and will do mail order but i dont how much or what there like

if thunderbird was for bus i believe that best performance etc on the bus is achieved using quality german standard muffler. there wasagood thread about this on here a week or so ago

I used a Thunderbird after my motor rebuild on my twin cab a few years ago and the internals all fell apart after 3mths. priced around and the prices were scary, ended to going to Exotic Exhausts (32796355) at Sumner Park and they from the extractor to the to the tail pipe end complete, as they have all the equipment for making custom exhaust systems, price was about $50-60. This was a couple of years ago though

sand kombi what do you use now?

just a standard muffler, sounds a bit deeper though. there's no label on it.
They also made me a hot dog for it as well, but it's to noisey
Give them a phone or go and see them after the xmas break, they were at unit:2b 29 jijaws st Sumner Park. They were really helpful when did mine.

where is summer park, i am in springwood nsw is summer park in qld?

Yes sorry about that, I thought you were at Springwood in Brisbane