honestly, if you can afford to..... trade her in on a BA, i did what you are thinking with my AU.
from this
to this.
all up costing me over 8 grand.
I did interior wheels bodykit, respray, exhaust CAI and was gathering parts for a turbo conversion, in the end i ended up trading up toa BA fairmont ghia that went like a bat out of hell after mods. My advice, don't waste your money and time on an AU.