Would any know one if
these are the parts for an aftermarket radio installation:
Metra kit #: 99-9101 (00-03 Audi A6) needs to be cut and modified for exact fit.
Metra harness #: 70-1784 (VW/Audi Amplified Harness)
Metra Antenna adapter #: 40-VW53 (amplified antenna adapter)

If they would work in an a4 01 with a symphony radio. Iam unsure about the harness.

 

HELP ME OUT ANYONE with information would be great help to me

 

Sounds like you should be good to go!

I don't have BOSE... so I don't know if that complicates things or not. I think it just complicates swapping speakers.

SOunds like you're good to go, though.