When announced by Rover in 1968 the Three Thousand Five got to 60mph in 9.5 secs according to Rover, 9.7 secs according to CAR (May 1968), 10.4 secs HOT CAR (March 1970), 10.54 secs ROVER Brochure 1971 (Series 2),
10.5 AUTOCAR.
Hope this helps, Regards, John.