Quote Originally Posted by gabe View Post
Custom short fittings 1-4" BSPP to 1/2" barb are shipped with the rads to enable linkage, as well as special snap rivets to attach fans in the middle. Clamps and tubing are not included. Above, we used #6 worm drive, and black tygon cut precisely to 9/16.

SLI: I don't think so (not positive though). You basically only have 25mm spacing between the two rads (the fan)
you could have more room depending on what fans you use or if you use shrouds and ect.