So after going through all the prices ADD VAT!!!
This is something most people miss at first - the prices on Simon Auto's website include tax, whilst the Carjoy website they do not. Also there are more pipes on a Murena than the four that run along under the car. If the car is a 2.2 there are actually seven pipes altogether. The are the four under the car, two more up to the engine and the complex one that runs under the inlet manifold. On a 1.6 it uses the same four under the car but only two to the engine which are different to the 2.2 model. If you are replacing the original pipes with s.s. you should really do all of them; especially as the one I have seen corrode through on a 2.2 is the complex one under the manifold. They get a pin hole and leak the coolant away slowly and it is often not spotted for a while.
Since the Simon (or Carjoy) ones are already made with all the right bends and brackets, there is hardly any point in trying to have others made up since the cost including labour means there will probably be little difference in cost.
Roy