hey Norfolk...I have an Antec Server Titan chassis. it's not quite a 'tower', but I think when you look at the Antec website listing, you'll agree it's a HUGE case. in fact, it's so bloody big I find myself not having the space for it.
it comes pre-installed with fans, all Antec Tri-Cool (1x120mm, 2x92mm, 1x80mm) but no PSU.
if you're interested, give me a PM and we can talk specifics.
Antec.com - Titan