The strut part numbers are different for both front & rear struts for the 3.0si coupé & roadster (the only non-M combo where there's a coupé as well as a roadster) in both standard and M-sport configs - don't know what the physical differences are but would assume it's to due with valving for the different weights of the cars. Can't find the part numbers for the springs, but from memory they were different too.
Although saying all that, it doesn't answer the question as to whether or not they'll fit or work. As has been said, check with the supplier - if the supplier doesn't know then don't use that supplier.