I'm planning to add Flyin' Miata front & rear anti-sway bars (http://www.flyinmiata.com/index.php?...0%20%201990-93) to replace the stock components on my 2004 NB (ending up with an FM Stage 2 suspension). But a potential problem area I need to address are the NB anti-sway bar mounts, which are less substantial than those on the NA. (To see the NB mounts flexing under use, watch: https://www.youtube.com/watch?v=CQG5aUrhpew )

I've been looking at a couple of Racing Beat solutions to correct this, the complete RB "Sway Bar Brace Kit" @ $92 (http://www.racingbeat.com/Miata-1990...ars/54120.html) and the "Brace Kit Hardware" (aka "blocks") @$31 (http://www.racingbeat.com/Miata-1990...ars/54122.html). (To see how much less the mounts flex with just the blocks, see: https://www.youtube.com/watch?v=3deivrLzxmo)

What I'd like to know is what effect adding either the complete RB "Sway Bar Brace Kit" (which adds a brace to the front anti-sway bar as well as the "blocks") or just the "Brace Kit Hardware" ("blocks") will have on the performance of the FM front bar. While improved performance would be welcome, what I want to avoid is degraded performance. Since I have no plans to track this car (ie, extreme use), but it does see spirited use, I'm also wondering whether adding the compete kit is worth the added $61 over just installing the blocks.

I've also looked at the FM "Heavy Duty Sway Bar Mounts" (http://www.flyinmiata.com/index.php?...umber=13-36600) but they seem like significant overkill for my needs, in addition to being more expensive and harder to install.

If you know of any, I'm also interested in learning of other alternatives that may be out there.

While I know thousands of Miata NBs have logged millions of miles without breaking the NB anti-sway bar mounts, as a devotee of Murphy's Law my interest is in doing everything reasonable to avoid being one of the exceptions (BTDT with other sportscars and parts that never break).

Bill