BigD

What brand did you get? Might want to use them as a paper weight.

Slo_crx1

The one's I have have sleeves that install a certain direction with set screws that are supposed to face up and little poly inserts that wrap around the shock to take up space. My friend got the exact same set for his car and put it in with the set screws on the bottom and didn't use the inserts. He ended up with the sleeve not setting completely into the shock, and popped a hole in the side of 2 of his brand new koni 5-way adjustable shocks because he tighted the set screws into the shock casing. :1
Oh, and spring rates do play a big part in handling and ride too...so beware the bay sets that just say "coilover" in the descriptions (that info was for the noobs, not that any of you long time guys don't know what I'm talking about )