Check this from GM High Tech. Interesting reading and pictures.
http://www.gmhightechperformance.com/tech/0205gmhtp_buick/
http://www.gmhightechperformance.com/tech/0207gmhtp_buick/
http://www.gmhightechperformance.com/tech/0209gmhtp_buick/
http://www.gmhightechperformance.com/tech/0205gmhtp_buick/
http://www.gmhightechperformance.com/tech/0207gmhtp_buick/
http://www.gmhightechperformance.com/tech/0209gmhtp_buick/