Once my welding is done I’ll be building up my rear end suspension and brakes etc, but I don’t know what the recommended torque requirements are for any of the bolts.

Is there a downloadable service manual or something similar with diagrams and torque info?

Cheers

 

You'll find various classic manuals here
http://ken-gilbert.com/impreza-manuals

Some are US manuals but for the info you need will be the same 99-01 Mechanical Components.pdf