Under the dash there was a centre console which went from the dash to the transmission tunnel, and then along the tunnel to surround the gear lever and then to incorporate an ashtray behind the gear lever. An armrest with a lift-up lid sat between the seats.
The seats were a vast improvement on the old model. The three seaters had seats with fibreglass bases that had an upholstered cushion that sat in them. The new model had seats with a tubular steel frame that were much more comfortable and supportive. This model has a new soft top design which folds down behind the seats instead of the assemble it yourself roof on the three seater.
On the exterior of the car the changes were more subtle. The boot lid no longer had the 'turn to lift' T handle on top of the boot, and instead had a small chrome horizontal handle on the back of the lid, and now had the key hole on the rear panel just above the number plate. This involved a new panel at the back of the car and a new boot lid. The doors were different as well and now had opening quarter glass windows instead of the non-opening ones on the previous model. The key hole was also different and no longer had the slide aside flap over the key hole. The first of these cars used the same wings shaped Datsun badge on the bonnet as the three seater, but most of them have individual letters that say Datsun. Side badges say Fairlady and the rear badge says Datsun 1500. Some American cars were delivered with a Datsun badge on the sides and back and no Fairlady badges. The grille was the same as the previous model.
Mechanically the cars were pretty much the same as the previous model, and continued to use the 1488cc 85hp G series engine. The gearbox was a floor change 4 speed with no synchro on first, the brakes were drums on all four wheels.
The 1965 Datsun Fairlady SP310 was in production from August 1964 until May 1965, it was replaced by the bigger engined Datsun Fairlady SP311.
