w1lc0

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

Then remove ELS from the title, this is EVL. You clickbaited me ;)

I think you can now press Ctrl+H and grab his body ! (Traffic Policer or Arrest Manager does this)
RIP. lol

This is basically exactly what you are looking for.

I believe what's happening here is that the <requiredExtras> line actually only picks 1 of the 2 at random, it won't spawn both at the same time (And this is likely why this was intended for use on the dual lightbar models), there's a line for it to add every extra, but that would cause you to have 2 push bars at once. So unless there's a line that I don't know of (And there very well could be), you'll have to choose one or the other.
Sorry, hopefully someone else can chime in on this and help you out.

Go into the vehicles.meta and add/edit the following on the CVPI's entry.
<flags>FLAG_HAS_LIVERY FLAG_EXTRAS_REQUIRE FLAG_EXTRAS_STRONG FLAG_LAW_ENFORCEMENT FLAG_EMERGENCY_SERVICE FLAG_NO_RESPRAY FLAG_DONT_SPAWN_IN_CARGEN FLAG_REPORT_CRIME_IF_STANDING_ON</flags>
      <type>VEHICLE_TYPE_CAR</type>
      <plateType>VPT_FRONT_AND_BACK_PLATES</plateType>
      <dashboardType>VDT_GENTAXI</dashboardType>
      <vehicleClass>VC_EMERGENCY</vehicleClass>
      <wheelType>VWT_MUSCLE</wheelType>
      <trailers />
      <additionalTrailers />
      <drivers>
        <Item>
          <driverName>S_M_Y_Cop_01</driverName>
          <npcName />
        </Item>
      </drivers>
      <extraIncludes />
      <doorsWithCollisionWhenClosed />
      <driveableDoors />
      <bumpersNeedToCollideWithMap value="false" />
      <needsRopeTexture value="false" />
      <requiredExtras>EXTRA_1 EXTRA_2</requiredExtras>
      <rewards>
Note that this was originally intended for F5544's Dual Lightbar models, so you'll likely need to change it to only EXTRA_1 or 2 depending on which it is.