I can't seem to find any resource on the net that has bolt sizes and part numbers for our cars. I found the request a part number thread but that's pretty inconvienient. Is there anything like this or am I sol?

 

Bolt sizes, of course you're not going to find them. Mitsu won't make any money from you if they gave it out.

Part numbers though, can be found here. You can also buy parts from that very website but if you prefer, just find the bolt you're looking for, call your dealership parts dept, and tell them the part number you want.