Surf Manual

I have the Haynes Manual for 4 Runner 79 - 96 Diesel workshop manual.
Pretty much covers all bases and VERY close to Surf specs.
It cost around $40 Aust, and you can get it at any Repco etc.
GENUINE Toyota repair manual for the Four Runner is RM 158 E. Probably as close as you'll get.
Just have a look through the archives as there's lots of answers to questions you may have.
Best wishes.

Ken