Cloth Blazer Seats

[tubbedII]

I've read a lot of threads, but still don't think I have it straight on the difference between blazer seats (CST vs Utility) or the upholstry option with cloth inserts.

If anyone knows of a good thread to point me to or a website, that'd be great. If not, can someone please explain:

1. What years were houndstooth patterns available?
2. What years were scroll patterns available?
3. Whats the difference between the CST seats and the others?
4. Are Cheyenne buckets the same as certain Blazers?

Sorry if these sounds like stupid questions, but I don't know much about blazers but I'm looking to buy one tomorrow and trying to do all my research on it.