Sheet metal valve covers?

Alright, so i have realized its time for me to put some of these on my ls2. I need to relocate the coil packs and make room for a #12 AN male fitting on each valve cover for my breather/catch tank. Since the stock stuff is not that accessable, and ive heard all kinds of stories how these sheet metal ones are hit or miss(leaks, cracks, fitment...).. Does anyone have any affordable sheet metal ls series valve covers they recommend? I dont need anything for larger rockers or anything like that at the moment, just something that will go on my engine and i can plumb some stuff to.

Any help is appreciated. Thanks in advance!