995-16 valve spring alternatives

With those springs, assuming a 1.66 installed height, he'd be a little closer to the coil bind height at max lift compared to the Hughes 1110. Not saying they're not a good spring, but the installed height and open height number specs are being exceeded. Would that not shorten the service life a little? 1.8" installed height almost sounds more like a drop in for SBF or SBC...