Based on this my understanding is that later cars can attend but would be in the public car park:
Is the event solely for Japanese models?
Yes – all cars being displayed must be Japanese that began production pre-2004. Therefore vehicles with a registration later than 2004 with a vehicle that was produced from 2004 is permitted to display. Visitors can park their cars in the public car park no matter what make or model.
Vehicle passes for Japfest Classic are being sent to ticket holders now, please check your inbox.
TICKETS - Each person in the vehicle will need a valid entry ticket - purchased in advance.
VEHICLE PASS - You MUST print and cut out your vehicle pass for car entry. Mobile versions of the pass will NOT be accepted .
When approaching the venue, please follow entrance signage for Section R.
Marshals will then direct you to the circuit and towards our club stand R3
ARRIVAL INFORMATION
07:00 - ENTRY TIME
09:00 - LAST CLUB ENTRY
10:00 - PUBLIC SHOW OPENING
DO NOT ARRIVE EARLY. YOU WILL NOT BE GRANTED ENTRY BEFORE 07:00.
Vehicles must be parked on club stands by 09:30. Any clubs who enter after 09:30 will NOT be permitted entry inside the show and will have to park in the Public Car Park.
Please note this is the first time this event has been run and also at this venue - and Japfest shows are busy so please prepare for delay in getting in.
and… if this is not enough to contend with the Chichester half marathon is taking place on Sunday which might cause delays to your journey to the show. There is a road closure in place on New Road, just north of the circuit between 09:00 and 10:00, so please do try to be early to arrive to avoid this.