To me it makes sense,it's a low alt version with the Allison which is where most fly in AH.

PS: I'd rather see the beaufighter added but hey it has 4 cannons too!
why would it have to be perked with cannons ????
you don't see mossy/tiffy/hurri/spits/109s/190s/n1k1/ ....ect ect all cannon birds BTW, perked do you ?
so why perk an murican bird with cannons ? inquiring minds want to know !!!!
.flame on
Four cannons is not the issue. Four cannons on an aircraft for which the vast majority did not have cannons at all but because the four cannons are available in AH it completely dominates the usage for that aircraft is the problem that the P-51A and A-20G have.
All N1K2-Js had four cannons. All Typhoons had four cannons. All fighter Mosquitoes, other than the low production Mk XVIII, had four cannons. Many, many Fw190s had four cannons. The significant majority of Hurricane Mk IIs had four cannons. All Tempests had four cannons.
You cannot have the representative versions of those aircraft without having them armed with four cannons. There are two aircraft, both Russian, in AH right now that violate that and offer rare gun packages and in both case the historically common gun package is essentially extinct in AH. The La-7 should be armed with two 20mm cannons and the Il-2 should be armed with two 23mm cannons. The three cannon option on the La-7 and the 37mm option on the Il-2 should be perk options and so the P-51A and A-20G should follow the same pattern, offer the four cannons but at the cost a perk point or five.