hi, and welcome to this forum
please don't ask questions about any other producer than AquaComputer.
the top, bottom, front and back of the aquadrive is made of stainless steel.
the opening at the back ist made for any normal ide-harddrive. but, i think, that scsi drive will fit also.
which tzempretures you will reach, is hard to say, because there are influences. what caser do you have? is it noise-insulated? what kind of fans do you use.... the only thing i could say, is that i think, you will have an acceptable temperature.