Hi evo, yeah bugger about the highway cut. Might have to raise the intake a bit.....
I went to local bike wreckers and compared a few different shocks. The IT 175 had a straight exit for the hose fitting where the 465 had a slight down-angle which caused the interference, but a 84 YZ 250 shock went straight in.(at least that is what the wreckers tag said it was..) It is a steel body and the main body attached at the swing-arm end instead of the top. It has no remote reservoir, so no need to grind the frame or anything, and is the exact length as the IT 465. It clears the air box ok and the tank went straight back on. I know the alloy bodied remote res shock is much better performing, but for my intended use this will work fine. Even the heavier progressive-rate 550 spring fit straight on to the YZ shock!
The shock itself was a bit light but it was old and perhaps worn. I will try try source a good shock, any out there?
I fitted the forks and front wheel then set it down to have a look. Holy crap it is much higher now! The engine will drop it a bit when i refit it,but it looks quite good. I took some pics which i will try to post tomorrow.