You could step up to the ARP ss studs but at twice the cost I personally couldn't justify the cost beyond the standard kit.
Very happy with the kit I used and will probably get another one for Misfire if I remove the exhaust manifold and can afford the added expense at that time.
P.S.-Also responded on mr.net but thought I'd post here for the benefit of others as well.
A forum community dedicated to Mazda Miata MX5 owners and enthusiasts. Come join the discussion about Mazdaspeed performance, modifications, troubleshooting, racing, maintenance, and more!