Are the sprngs two sepreately wound round wire springs with a flat dampener in between them, or are the springs a single round wire spring with a flat wound dampener inside it?
It should have the 995-16s for either "292" cam Comp makes. You should have the shop verify the Isky springs will work properly with the Comp camshaft if they were bought seperate. If the springs are true doubles - you cannot use factory retainers, and the spring seats and guides should have been cut to allow use of them and the positive valve seals.
Post a picture of the installed springs and we can tell you if it's right.