Been thinking about the fuelling side of the engine recently while reading some other topics and realised that my fuel pump may not be up to scratch or is in danger of failing which could have serious consequences for the engine. As far as I'm aware it's the original one in there and it's knocking on the door of 12 years old now

So I've been looking at the various options, one of the easiest being the Walbro 255 in line pump. I think I'm right by saying this could be added to somewhere like the engine bay as an addition to the in tank pump to improve the stability of the flow.
Has anyone installed one? Would like some ideas on the theory behind it to makesure I'm thinking along the right lines. Hulmie has already suggested some other good alternatives that replace the original pump so there is no need for extra wiring