fat_120y: I will get some measurements for you tomorrow.
Converted: I was told that a TC (i think) Cortina top hose fits for the top hose for our set ups, but after buying one I found out that the alloy pipe off the motor had been cut and rewelded at a diferent angle on my motor. So not wanting to waste the hose I tried it on the bottom and it fits. I cant rmember which end it was but I trimmed maybe 10-15mm off to get it fitting better. Hope that is of some assistance.