Want to learn to add rockets to a P51 in CFS2

Thanks to all of you that help out us newbies.
I appreciate you taking your valuable time.
Is there a recommended App to do this and or a tutorial
I have imported a couple of P-51 planes both CFS2 and the default CFS1 P-51 and in the missions in CFS2 it will not let you select rockets as armament. But in CFS1 you can select rockets as well as drop tanks.
Thanks
I appreciate you taking your valuable time.
Is there a recommended App to do this and or a tutorial
I have imported a couple of P-51 planes both CFS2 and the default CFS1 P-51 and in the missions in CFS2 it will not let you select rockets as armament. But in CFS1 you can select rockets as well as drop tanks.
Thanks