Your best combination to achieve a decent time would be 17" wheels using soft to medium slicks..
I have seen as much as 0.32 reduction from using road tyres, but you have to get them sticky! and to have the track glued would be helpful too.
Main three stipulations for the Top Ten Day are are mods on the car, any fuel, and ROAD TYRES!!
Please do not rule out the Skyline's for this event as i personally think they stand a good chance..
Were some of those launches from the Revs 0 - 60 challenge in Nov 2000.
If so I believe that a certain Rupert and Dirk were also having fun trying to get under 4sec and if my memory serves me correctly Rupe ran a 3.98 ( Prior to 2.8 conversion ) and Mr Diggler a 4 dead in his old R33..