Reference Details
- Availability
- optional · 1971 Buick GS Stage 1
- Category
- performance · 1971 Buick GS Stage 1
- Code
- M40 · 1971 Buick GS Stage 1
- Confidence
- documented · 1971 Buick GS Stage 1
- Notes
- Available/used with 455 GS; Hemmings documents Stage 1 TH400 details. · 1971 Buick GS Stage 1
- Availability
- optional · 1972 Buick GS Stage 1
- Category
- performance · 1972 Buick GS Stage 1
- Code
- M40 · 1972 Buick GS Stage 1
- Confidence
- documented · 1972 Buick GS Stage 1