To use the Monster Manuals or other sources for creatures I just apply the following rules of thumb:
Wounds: Hit Dice (HD) divided by 2 and rounded up.
Toughness: Armor Class (minimum 5) + Hit Dice (HD)
Shock: based on Torg Strength stat (see below)
Stats: if given can be used one to one (creatures deserve the boos in power in Torg, because the players have that may cards and Possibilities), otherwise 7 + Hit Dice (HD) as baseline. Obviously you will need to make changes here, if something makes no sense (e.g. Charisma for a Ooze)
I am using OSR resources for my Aysle game, therefore I am working from a very limited base.