I bought them because I got them for a ridiculously low price that I couldn't pass up (but in hindsight should have). Grapefruit shooters are not attractive on any car, esp. a Z.
I won't make up any foolishness about flow or whatever, I was new to the Z community back then and wanted more power, quick and cheap. I do like the sound of them though (it doesn't sound like a Civic weedeater at high rpms), but I'm opting now for some B&B ovals in the future. The look of Bernie's exhaust is exactly what I want.