I have an old 20" 2006 iMac that is missing the temperature sensor and hard drive mounting hardware. I was able to get a Laptop SSHD, a Seagate 1TB ST1000LM014, SATA 6.0/3.0/1.5Gb/s NCQ for a VERY good price. Unfortunately, it is a 69.85 mm (2.75 inch) model and the drive bay is made for a full-size drive. For such a light drive, could one avoid the expense of the conventional drive mount and use two thick foam blocks and double-sided tape as a standoff/shock mount on the case back, instead of using more expensive mounting hardware? If one mounted the drive with the electronics facing up and had a thick enough standoff, the temperature sensor could go on the drive case between two foam standoffs. Theoretically this would work and keep the cost way down. Is this a reasonable and "safe" thing to do for an old machine?