How Can I Fit An Eaton M90 Supercharger To The Buick 3800 Motor?

The L67 LIM won't fit on a Buick V6 engine (different intake port layout and higher deck height). The Buick V6 did come out with a M62 supercharger in overseas vehicles, unfortunately these superchargers are a lot smaller then the M90. However, the M90 may be retro fitted onto one of these LIMs with some modification and has been done before.

For one of these lims it is best to contact http://www.moradpartscompany.com/

The manifolds can be found on some of these vehicles

1991–1995:
Buick Park Avenue Ultra

1992–1995:
Oldsmobile Eighty-Eight LS (opt), LSS (opt)
Oldsmobile Ninety-Eight Regency Elite (opt), Touring Sedan
Pontiac Bonneville SE with H4U RPO, not badged - SLE (opt. SC package), SSE (opt) & SSEi

1995 Only:
Buick Riviera(Opt)

They're getting hard to find now days though.