LS400 suspension question

What's up guys!  Need a little help, and maybe you guys can clarify.  I have a 94 LS400, and I thought I read somewhere in the forums that if you use the JIC FLT A2 Vip coilovers for a UCF20 on a UCF11 like I have, you can go a lot lower than you could with the UCF11 version.  Is this correct, or do I have it backwards, where if you are using the UCF10/11 coilovers on a UCF 20 you'd be able to go lower.  Please clarify.

Thanks!

iirc it is ucf20/21 on 10/11's that make them lower.

there was actually a thread about this a while ago, search for it and it'll explain it all.  i can't recall what the answer is though.