I have been able to locate a few items that are starting to hit the market for this car. Please post up anything else you have stumbled across!
Intake:
Corksport SRI - $179
http://www.corksport.com/corksport-2009-up-mazda-6-short-ram-intake.html
K&N Drop-in - $50
Lowering Springs/Coilovers:
Eibach pro-kit (V6) - 1.2" front, 1.4" rear- $249
http://protegegarage.com/1687-product-1687.html
B&G - 1.5" all around - $229
http://protegegarage.com/1688-product-1688.html3
Autoexe Lowdown - 1.2" all around - $503
http://www.corksport.com/autoexe-2009-up-mazda-6-low-down-springs.html?sl=EN
H&R coilovers - 1.25-2.3 inches the front and .75-2.0 inches in the rear - $1,131
http://www.corksport.com/product-32323.html
H&R - drop unknown - $249
http://www.corksport.com/product-32522.html
Shifters
TWM Shifter extenders - $40
TWM Short shifter - $175
http://www.twmperformance.com/shortshifters/mazdashortshifters/mazda6shortshifters.htm
Intake:
Corksport SRI - $179
http://www.corksport.com/corksport-2009-up-mazda-6-short-ram-intake.html
K&N Drop-in - $50
Lowering Springs/Coilovers:
Eibach pro-kit (V6) - 1.2" front, 1.4" rear- $249
http://protegegarage.com/1687-product-1687.html
B&G - 1.5" all around - $229
http://protegegarage.com/1688-product-1688.html3
Autoexe Lowdown - 1.2" all around - $503
http://www.corksport.com/autoexe-2009-up-mazda-6-low-down-springs.html?sl=EN
H&R coilovers - 1.25-2.3 inches the front and .75-2.0 inches in the rear - $1,131
http://www.corksport.com/product-32323.html
H&R - drop unknown - $249
http://www.corksport.com/product-32522.html
Shifters
TWM Shifter extenders - $40
TWM Short shifter - $175
http://www.twmperformance.com/shortshifters/mazdashortshifters/mazda6shortshifters.htm