Thanks
The brass Y came from here:
http://www.coolercases.co.uk/home.htm
It was dam expencive for a Y connector but thought i better get one wharlst i was ordering. Its differant from the nylon Ys as all the barbs are at the same angle like an equlatral triangle where as with the nylon ones 2 of them are at a tighter angle that the other so it makes it less flow restrictive but still if i end up using it it will do the job. not sure about the brass 90s, ive only seen nylon ones. I bet you could make some pretty easly tho
Cheiftec cases are great. they have 2/3 (if you use a floppy you can only use the 2) 80mm fan mounts at the front and 2 at the back.
Humm im not relly spose to be taking on any more work till i get what i have finished but as you say its simple if you could send me the meterials and decent working drawing im sure i could fit you in.
Just out of interest whered you get the 172mm fan?