has anybods replaced their oil cooler hoses on a gen 2 ??

I am thinking of fitting a " t12 stator cooler kit " much discussed on the af1 aprilia forum in the states .apparently this kit does work to cool the stator heat build up in hot climates !!!

the kit involves cutting a lump out of one of the oil cooler rubber feed pipes to fit a tee piece !! , id rather not cut mine so I have the option of putting it back to standard , but require the hose bore size so I can replace the one pipe with new .