Just to say that Probuild have a pipe that works very well, for £30 (140 and 120 size I think). You c an get an AAP power manifold (excellent!) , header and pipe for about £100.
Plus you could look into some second hand stuff aswell. Use a cheap but goot mount like the Gator soft and safe, MK horns with the triangular base, and you'll have a perfectly safe, strong, and reliable model, for less than your French jobbies.