Coming from the miata community, I own a model year that is considered to have a rather weak differential - a 92 model which has only a 6" ring gear! However, even on this weak rear, I was able to log 115,ooo VERY hard miles: drag racing, youthful donuts, burnouts, etc before it blew at the drag strip. :p Even more, the output of my mod'd car was also dyno'd at 122WHP, up from the stock 95WHP. So my question is, how weak is weak? Any turbo guys having trouble? Any MazdaSpeed Diff Mounts and/or additional PPF Braces ala SR out there? I am just concerned because of the old SCC write-up (on the SR Motorsports car) making a refernece to this. Your thoughts? Better yet, your personal experiences?

i think the tranny ( although shift forks have problems ) and dif is fine it's the pressure plates that are crap...

sometime after the release of the 2004 model, the shift fork parts were updated/upgraded. However, there is no general recall.

as long as you avoid tons of wheel-hop and don't plan on going way over 300 rwhp the stock clutch/tranny/diff should be fine