Table: tyrrell_matra_1966
Columns: year
entrant
chassis
engine
points

Question: Name the total number of years for brm straight-4
SQL: SELECT COUNT("year") FROM tyrrell_matra_1966 WHERE "engine" = 'brm straight-4'

Question: Name the total number of points for chassis of bmw t269 (f2)
SQL: SELECT COUNT("points") FROM tyrrell_matra_1966 WHERE "chassis" = 'bmw t269 (f2)'