Dave,
Do you need to go to a steel pan? If so you can put pan from a '86-'93 on a '96-'2005 by just drilling a couple of holes. You can't use a '85 pan because it used a 2 piece rear seal.
Do you need a steel pan, cause a shallow aluminum pan from a '96-2005 4x2 Blazer/Jimmy or S-10/S-15 will work also, and be less work (drilling) you don't need to use the braces to the tranny for your setup.

Sent you a pm also.

Pat