I just bought an 03 with a manual tranny but only frontwheel drive. I also have a parts car with all wheel drive and an automatic tranny. I'm wondering if installing the differentials will be worth the trouble and if anyone has experience changing to all wheel drive. My new rav only has 50k miles so I wanna fix it up and modify it alot. I can get help doing the work if its beyond my capability and any info is appreciated.