First, Weclome to NICO, I think Jesda hit all the high spots. Now on to your post ...
91Z32TT wrote:Thanks for the info guys. I'll do a little research on the lights you mentioned, I'm an HID dealer so which ever headlights I bought would be fitted with them. ...
There's a thread about putting 5 series Bimmer lights in the Q, looks good, but probably not "brighter" per se.
91Z32TT wrote: ... I don't think the K&N is a problem, because it isn't a cone filter, it is the square oem replacement type. ...
The oil from the drop in can also do harm or effect the MAF's performance. In the end it's better to use a quality paper drop in filter.
91Z32TT wrote: ... It appears to still have the front speakers, factory CD changer, and some sort of factory amp in the rear, but I wasn't able to see if it was a bose or not. ...
The amps were piggy-backed on each speaker (except for the A piller tweeters), here's a diagram of the trunk to help identify the part you've found.
Click pic for larger version