Series 1 V8 86" exhaust replacement

Help required - first posting. I have a series 1 86" fitted with a Rover 3,500cc V8. I bought it over ten years ago already converted. The exhaust has gone rotten - and so soon!! The current exhaust is a single pipe into a single silencer that exits via the power take off hole in the rear crossmember. The question is where do I get a new exhaust from? What combination of bits may do the trick? Is there anything I need to avoid? Finally, with the current exhaust routing, (done for ground clearence reasons I think) all of the fumes are drawn into the back of the vehicle; if the back is open - it is a full tilt. If anyone knows how to replace the exhaust with one that can be routed so that it does not poison me that would be a bonus.
Many thnaks
Michael

there are places that can make an eggsauce to suit, made to measure like. or you can buy a selection of bends and straights from a decent motor sport shop

I've a III wiv a V8 in which probelly int a million miles away from your set up. I'll be getting a stainless eggzorst made up when this one rots, but it isn't too tricky at the mo'.

I've got the standard 3.5L fannymoulds and downpipes which join into one just behind the cross member that itself runs just behind the injun/gearbox join.

That has a metal flexi pipe (about 18" long) attached which runs to a Series III pipe and single backbox & like yours exits thru the PTO hole.

The flexi pipe would allow a fair bit of choice as to where you actually run the rear pipe & what you suspend it from.

The main problem I had was curling it around the overdrive, before I fitted that it was a piece of ****.

Dunno if that makes any sense?

So basically you could make one up with:

Standard fannymould & downpipes to the join.
18" to 2' of flexible pipe
Series rear pipe of some kind
Some eggzorst hangers (I've got two) with a length of webbing stuff to cut to length for the hangers (I used some lengths of an old leather belt I had)

Does the job & passed the last two MOTs.

a friend of mine built his own zorst on his Series 3 v8 completly from scratch using flat steal plate!! its got 8 pipes coming back from the block to about the rear axle where there's a couple of collectors an a balance pipe, the two pipes then got out and up the back to two cherry bombs, it looks mad! think it took a year to make tho.....

... my own eggzorst usually consist of scavenged bits of pipe held together wi beer cans.... just made a new one yesterday infact after the last one came off