Welcome aboard!
How come I never knew of these SE 'Burb meets???
Haven't done a car thing for AGES!!! My trusty '06 is needing a run... (and new tyres, brakes, probably clutch in the future).
I've only modded springs/shocks on my machine, it's a daily. I have had the fuel pump "booster" fail in my car around the 3 year mark (crossed over warranty period) and Mazda couldn't diagnose it. Basically, internals couldn't handle heavy load under boost. Just replaced with OEM at the time since there was only a "reconditioned modified internals" option available. Now I would say any engine mod, this is a must.
3 MPS - Rolling on Pirelli PZero Neros, sitting on Bilstein B12's, stock internals... still makes me smile with the Zoom Zoom.