here's a start. Yeah, create your own thread and maintain it.
mazdaspeed accessories
mazdaspeed3 coilovers - RAMS8ML10
mazdaspeed3 springs with 2 rear camber links - GRMS8ML25
mazdaspeed3 rear camber links - GRMS8ML07
mazdaspeed3 cold air intake - GRMS8ML29 - who knows if they sell this?
mazdaspeed3 cai filter - GRMS8ML10
mazdaspeed3 exhaust - GRMS8ML26
mazdaspeed6 springs - GRMS8MH14
mazdaspeed6 cold air intake - GRMS8MH32 - who knows if they sell this?
maintenance
regular filter with o rings - L321143029U
spin on conversion - L31114311 and gasket - LF0114342
spin on filter - LF0514302A
drain plug washer - 995641400 - this normally comes with the filter
filter wrench - AKS75140
spark plugs - 000018L3Y3
drive belt - L3K915909A9U
radiator thermostat - L33615170
ignition coil - L3G218100A9U
Lighting
OEM HID ballast/control module for 3, CX7, CX9 - D530510H3
exterior
front bumper mustache - BA6R50B31A - to remove the holes left from your front plate bracket
undertray aka lower shield - BP4K56111L
undertray fasteners/clip-nuts (sides, need 4) - BAY6-56-496 or BR5S-56-496
undertray fasteners/clip-nuts (front, need 3) - FB01-50-133C
undertray bolts (7 total) - 90720-0620 (old) or 90720-0616 (new, shorter bolt)
skid plate, radiator support, the piece that is on the bottom in the front of the vehicle - BP4K56112
mazdaspeed3 wheels - 9965097080
mazdaspeed6 wheels - 9965117080
forged mazdaspeed wheels - BLMS8MZ01
center caps - G22C37190A
interior
coin holder - G22C55225
shift knob - GP9A46030B
under the hood
cylinder block - L3K910300H
valve cover - L3M610210A
mazdaspeed3 battery box tray - B37F56040D
mazdaspeed3 battery box and ecu cover - L33X18593B
mazdsapeed3 battery box front panel - L33X18591A
tmic cover - L3K9207B0F
oem egr tube - L3K920310A
oem egr valve - L3K920300
maf - L3K913215
map - L3K918211A
pcv - L3K913890
primary o2 - L33X188G1C
secondary o2 - L34B18861A
boost solenoid - L3K918741
ambient temp sensor - G51861764
knock sensor - L80718921
crankshaft position sensor - L3K918221A
mazdaspeed oil cap - BLMS8ML02
oem fuel pump - L3K91335ZC
oem boost tube from turbo to intercooler - L33L13760B
mazdaspeed3 (fits 2007 ms6) oem boost tube from intercooler to throttle body - L33X13770A
mazdaspeed3 oem cold pipe - L33X13241A
2006 mazdaspeed6 oem cold pipe - L3K913241B
2007 mazdaspeed6 oem cold pipe - L3K913241A
turbo oil drain/return line - L33E14290
gasket for top - L3K914293
gasket for bottom - L3K914264
bolts for previous two items - 9XF002127L
tensioner pulley - LF1715980E
OEM cam follower or "collar" - L3K9-12-615
brakes
mazdaspeed3 caliper bracket bolt - 9YA02A225
mazdaspeed3 front brake pads - B3YF3323Z
mazdaspeed3 front rotor - B37F3325XA
mazdaspeed3 rear brake pads - C2Y32648ZA
mazdaspeed3 rear rotor - C25Y26251B
mazdaspeed6 front brake pads - GPYA3323ZG
mazdaspeed6 front rotor - G31Y3325XA
mazdaspeed6 rear brake pads - GPYB2648Z and apparently you need this as well - GPYB2649Z
mazdaspeed6 rear rotor - G31Y26251
suspension
mazdaspeed3 front sway bar - B37F34151
mazdaspeed3 front end links - B37F34170A
nuts for front end links - 999401001
mazdaspeed3 rear sway bar - B37F28151
mazdaspeed3 rear end links - B37F28170A
nuts for rear end links - 9YB101005
gaskets
head gasket - L3K910271C
turbo to manifold - L3K913710
turbo manifold to head - L3K913460
downpipe to turbo - L3F213490
intake manifold gasket to head - L3K913111
throttle body gasket - L3K913655
donut gasket - L3A140581
bpv to cold pipe oring diamond shaped "gasket" - L3K920255
fasteners
turbo and manifold studs - L33E13146A
nuts for studs - JE1040355
miscellaneous