Cheers dude.
I managed to get it all hooked together (had to cut one of the alloy pipes though to get it to fit, ), and I got a bit of silicon from Glyn to bodge the dump valve for now. What it needs really is a piece with internal bore 1 inch at one end and 1.5" at the other if your mate is likely to have anything like that?
Used 2 of the silicon pieces you gave me the other day so let me know what I owe you for those. Would have been stuffed without them!!
Got my rattle gun too so hopefully I can get my pulleys done tonight now too.