We discussed LS1 coils a bit in the COP thread. They're not true COP type coils, but are CNP (Coil Near Plug) and require a standard (albeit short) secondary lead, or a very long "boot". If you did fit them with a long boot, they still don't "package" that well when you turn them in the vertical, due to their laminated iron cores interfering with the UZ's valve cover.
Here's are some photos of the LS1 by itself, with a Toyota Camry boot, then a plug with about 45mm of extender. With all this, you can just reach the plug in the UZ head, but it ain't pretty, and you still have to figure out how to mount them.
If someone were dead keen to make these into COP's, they could be "made" to work, but IMHO there are better choices out there that will work just as well and are much easier to package.
Daniel no disrespect to you & your choice of coil. These LS1 coils work great in a CNP (Coil Near Plug) application like you're doing.