To hell with these. How about a never titled 07 Volvo S60 R for $35K and some change?
http://www.autotrader.com/fyc/vdp.jsp?car_id=224465640&dealer_id=342990&car_year=2007&model=S60&num_records=25&systime=&make3=&make2=VOLVO&start_year=2003&keywordsfyc=&keywordsrep=&engine=&certified=&body_code=0&fuel=&awsp=false&search_type=both&distance=100&marketZipError=false&model2=S60&search_lang=&make=VOLVO&color=&page_location=findacar%3A%3Aispsearchform&min_price=&drive=&default_sort=priceDESC&max_mileage=&style_flag=1&sort_type=priceDESC&address=03801&advanced=&end_year=2007&doors=&transmission=&max_price=&cardist=53
That's not really that much of a discount. MSRP was around $39k on these.
I'd still take the G8. RWD is a lot more fun, and there's no replacement for a huge V8.