Exhaust back box advice

Does anyone know the part number for the back box of a 300TDI system?

I would look myself but i seem to have misplaced mine.
Last seen in my mirror, tumbling end-over-end along the A38 just south of Exeter.

Probably need to replace it from the joint behind the mid box.
also, any ideas on cheapest place to get one?

any opinions on legality of just extending the pipe straight out the back as it's made no difference to the noise level.

I bought a straight through system of eBay for £70 delivered that's from manifold back sports system so only back box makes a big difference

Hi
The part numbers are LR153 & LR154, i got my exhaust from clickcarparts on ebay in 2011 its still going strong.
I have just had a look on ebay, for the mid and rear it will cost you £56.95 and thats with free postage.
I hope that helps
Cheers

no boxes on mine atall straight thru all the way

Mine fell off so I mended it with a piece of old cast iron down pipe and sealed it with stove rope and high temp silicone!

You need this one from Paddocks.
Very cheap but very good quality.
PM011 | Discovery 300TDI Sports Exhaust

Im the same as WLM,straight through no boxes. Its not that much louder. No problem come mot time either.

Yep, no boxes as well. Sounds good!

see i want to do a full straight through but worried about MOT, has any body had any issues at all? im currently running no back box or pipe as mine rotted off lol

It won't have any issues come mot time. As the engines are good enough to pass the tests with out cats or silencers. As long as it doesn't smoke too much your fine.

Sorry to hi-jack slightly, but do the metal tax disc holders have a set internal diameter, as looking to get rid of my back box for a side exit pipe, and thinking of using one for the trim? Pipe will be around 60mm.

I used one on mine,but the exhaust rattles on the wing at low revs. I don't have a rear hanger for it as its strong enough on its own,but might have to fit one to try and stop it vibrating. It was a bit of a rush job so should be fine with a bit of thought to it