I was wondering if anyone knows where i could buy a new ball joint and possibly new bearings.

Thanks

 

http://www.mazdatrix.com/h86-92.htm

 

Thank you for the advice.

 

bearings can be had from NAPA, partsource, or the like.

S4 ball joints are available straight from mazda for about 50-60cdn per side.
S5's....find a used control arm with a decent ball joint they weren't made to be replaceable. Or you can swap to S4 control arms...