Yes, the X58 MB has the marvell SATA III which act like the SATAII and the intel SATA II.
You can use either SATA port and you only can see the difference between them on benchmark, but not in the real usage. I will recommend to connnect the SSD on intel SATAII port.
Also you can run the benchmark for SSD on either SATA port to see how they are doing but don't run too much, and you want to compare the 4K reading and writing speeds, becasue it can decrease the SSD performance.
Here is the more info for install and tweaks / optimization SSDhttp://www.tomshardware.com/forum/270102-32-useful-articles-part