Actually some of the vehicles that they use for the standard (budget) service includes Renault Enviro MPV which I hate due to the uncomfortable seating. If you fold down the rear facing seat, you could fit up to 5 passengers but I am sure they will try to sell you a more expensive service.

They do have a "family service" which uses Kia Pregio van and I believe the van seat up to 8 passengers. I dont know the fare for this service (never used it before) but my "guess" would be MYR100-120.