I think the most compact setup for an LS block would be the front accessories from the CTS-V. Here's a photo of the CTS-V accessories on the front of an LM7 block (LS 5.3L), which should be the same size as your LQ4 block:
I ended up switching to the LS1 camaro/firebird setup because of the A/C compressor mount I wanted to use, but sometimes I wish I would have stuck with the CTS-V setup because it gives you a lot of extra room.