You're talking about pulling the high beams and placing another set of low beams in there. So you could effectively run 2 sets of low beams at the same time?
I've certainly thought about doing that myself (if that's what you're contemplating) as I never have a need for my high beams. Especially since I've got brand new lenses and run Toshiba HIR 9011's in the low beams. Pretty decent light output from one set of low beams with the new glass & 9011's. Would be great with 2 sets of low beams like that...
Cosmos Black/Black 1995 540iA M-Sport
BMW Individual Exclusive Edition, 1 of 65 total, 9/25/95 Build