Good idea, though general consensus seems to be to put the SSD in the optical bay, and keep the HDD in the main bay, which (at least in Apple laptops) is the only one that supports the sudden-acceleration drop sensor.
My old MBP had a PATA optical dirve bay connector. I didn't have the choice if in order to get the best performances.
Put your HDD in the optcal drive bay, and the SSD in the main bay. Adapter frames exist, at least for Apple laptops.