Personally, I love RockAuto...
I just basically re-did the front end on my truck...hubs, cv shafts, t-case...the works...I got the hubs and shafts from there and ended up having $350 into a repair that I was quoted $1400 for...and I got the more expensive made in USA hubs...all the stuff arrived within 4 days, and half of it came from California...no complaints here...
If someone was in need of SMOG parts to pass emissions, that would be a good place to start form the looks of things...
And 5 PIP sensors at $16 per...3 at $18...and 5 at $26...
Delco TFI for $86...
There are some decent deals there I think...