After a search on the net I ordered two 500x60mm pipes with 4 end caps not fitted - they are glued into position. As it turns out one 500x60mm pipe is long enough to do both inlets and the end caps are too small to fit over the tubes on the air filters and inlet manifold so they are not needed. The wire in the neoprene pipe is very hard so best cut with a angle grinder and the 3/8" jubilee clips are best replaced with 1/2" clips ( SS of course ). Photo of the new pipe against the old pipe and pipes fitted shown below. Direct link to what you need

http://ramair-filters.co.uk/ducting-automotive/60mm-neoprene-ducting.html

Not expensive for a good result IMO.

Regards Peter

Many thanks to Peter for this wicked tip, My own induction hoses were also showing their age and after reading this tip I called Ramair and purchased the above item as they will solve an issue and also tidy up my engine bay in one fell swoop and at a cheap price.

Once again many thank Peter

Mick G [09.15]