So I bought a Stebel horn as i'm fed up of the pathetic noise the OEM horns make, only problem is, it seems a tad large, has anyone fitted one of these horns before? If so, where and how would be greatly appreciated.

 

Which Stebel horn have you bought?
I fitted 2 Stebel Nautilus behind the grill on my classic. Can't remember exact details but ISTR hanging them from the slam panel. They were a very tight fit. They also needed lubricating
Spray oil into the air intake annually.
You will need a relay on the supply too.

 

I got a Nautilus Compact Truck Horn, I've looked at putting behind the grill but it does look tight, don't suppose you have pictures of the horns fitted?

 

Unfortunately no. I sold the car a few years ago. Usual rear arch rust unfortunately. If anyone knows where C841CVV has got to, I'd be interested. Silver 5 door classic.