Not wishing to rain on your parade Hylton but have you any idea how hard it would be to get that amount of people who want/need a new exhaust, have them all available on the same day and in the same area and for them all to want the same thing?
The reason i ask is because on another forum, someone came up with a similar idea about the OBX Racing exhaust headers, or as we call them, manifolds and downpipes for a model that is even more poorly supported in the exhaust area than the 7/9xx Volvos.
Just about struggled to get enough interest for 6 manifolds (that was with the originator of the idea buying two!) but the killer of that was the supplier wouldn't entertain a bulk deal. Then one person dropped out, followed by another and the idea was shelved.
It's a great idea in theory and more likely to be viable as the exhaust builder would know they had 6 customers in one hit. However, factor in that the 740 had a variety of exhausts according to year, engine, transmission and that makes it harder still. Now factor in that one person might want "factory quiet", another might want "Refugee from Santa Pod", two others might want "a little bit sporty", another might want a 3" system and the last might want a 2.5" system (assuming the other 4 people want the standard 2" bore system = 2 1/8" OD) and you have a recipe for confusion at the very least.
Then there's the tailpipe choice - some might want to replicate the original factory "S" shaped tailpipe, others might want two "S" shaped pipes, others might want one normal size straight pipe, someone else might want twin tailpipes and some might want a single large oval or "letterbox".
That's in addition to the 11 different systems fitted by Volvo from 1984-91 :
http://webcat.klarius.eu/cgi-bin/cat...body=*ALL&kid=
I mentioned Demand Engineering earlier in the thread, this page of this thread shows their work. Originally the small pic at the end was a video of how it sounded - it was very nice!
https://www.volvoforums.org.uk/showt...230038&page=19
Thing is, when people are spending a fair chunk of change on something they're going to have for quite a while, they are going to be a bit more choosy about how they want it to look/sound so a "one size fits all" isn't going to work, although the basic design on Andys car might suit most people.
He had the middle box (just in front of the back axle) deleted from his system so if it looks strange, that's why. The front box on the 760 is more or less just a collector box for the front pipes and from that point back, the system is pretty much the same for all 1988 on 7/9xx models with a few minor exceptions.
Like i said, great idea in theory!
