Turbo upgrade question

I just found out my Turbo is bad.... what’s a good turbo to upgrade to? I don’t want a stock replacement turbo... also what is the stock size turbo in a 2007 Mazdaspeed 3?? I was looking at ko4’s those any good?? Need help ASAP. Thanks

Dre
 
I just found out my Turbo is bad.... what’s a good turbo to upgrade to? I don’t want a stock replacement turbo... also what is the stock size turbo in a 2007 Mazdaspeed 3?? I was looking at ko4’s those any good?? Need help ASAP. Thanks

Dre

What are you driving?
 
I just found out my Turbo is bad.... what’s a good turbo to upgrade to? I don’t want a stock replacement turbo... also what is the stock size turbo in a 2007 Mazdaspeed 3?? I was looking at ko4’s those any good?? Need help ASAP. Thanks

Dre
What did you do?
 
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