I had a Mantec snorkel and wading kit on my 300tdi 90 when I had it. I got it direct from Mantec, and it came with a sheet of LR fitting instructions. I was under the impression that Mantec made them for LR, but that was around back in 1999. Out of interest that cost £200.93 then. If I remember the Mantec fitted with the metal elbow around the air intake using the 5 or 6 screws already there, and two brackets onto the windscreen frame. The quality was very good.