Clymers have been out of print (bugger - they were good!) and Haynes sucks for domestics.
Check around on eBay - you can often score secondhand manuals for Jeeps there for a nominal price, and Bishko Autobooks does legal/licensed reprints of quite a bit (I just scored a service manual for a Dodge M500 motorhome chassis from them - I think it was about forty bucks, for a new reprint.) Bishko sells through eBay and their own website.
The AMC360 was used in the J-Series, SJ, and some "performance" AMC passenger cars - I think the AMX, Matador, and Javelin all used it.
Also, check my site - in the Tech section, I've been putting up specs gleaned from FSMs I've been collecting, and I probably have specs for the AMC360 in there somewhere. All specifications on my site are taken from factory literature, and I use it for a ready reference myself.
If I have the torque specs, I'm sure I'll be able to dig up torque sequences (important for the cylinder head and intake) with a little lead time. I'm working on a site re-org, and I'll probably put those up as part of it.
Link to my site in sig.
"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"