Robin~you could go to www.uoaa.org...they have some really good informational pdfs/downloads on ostomies:)
I think, if you have Crohn's and a colostomy, you are not guaranteed 'thicker' output or the ability to use a closed end pouch...but like our diseases/reasons for our stomas, everyone is different!
Also a colostomy is USUALLY on the lower left and an ileostomy is USUALLY higher on the right.