it started life as a TC but grew 4 more cyl
http://www.autotrader.com/fyc/vdp.jsp?ct=p&car_id=253899373&dealer_id=63491637&car_year=1987&rdm=1260684550445&lastStartYear=1981&model=TBIRD&num_records=25&systime=&make2=&highlightFirstMakeModel=&start_year=1983&keywordsfyc=&keywordsrep=&engine=&certified=&body_code=0&fuel=&awsp=false&search_type=used&distance=0&marketZipError=false&search_lang=en&showZipError=n&make=FORD&keywords_display=&color=&page_location=findacar%3A%3Aispsearchform&min_price=&drive=&default_sort=priceDESC&seller_type=b&max_mileage=&style_flag=1&sort_type=priceDESC&address=24941&advanced=&end_year=1988&doors=&transmission=&max_price=&cardist=463&standard=false
"""1987 Thunderbird Turbo Coupe. 302 V8 with T4 Turbo, large intercooler and AOD automatic transmission, 3:55 posi disc brake rear axle. This car is about as clean a Turbo Coupe as you ll find anywhere. Black with black and gray cloth interior. There won t be any disappointments with this car, I don't know of any other v8 turbo Coupes, let alone as clean as this one."""
Almost didn't see the turbo in the pic. A little cleanup under the hood and it'll be a looker.
looks like a decent install. I suppose any turbo on a 5.0 will help.
Nice looking car.