Vultures are pretty poor choices overall.  The Harakoni also don't even have the access to Vendettas in Core formations that the Elysians do, which puts even more pressure on the Strike Variant.  I'm okay with Dave's posted Lightning Attack variant above with the AP/AT/AA5+ Autocannon, but the Strike variant needs more than just swapping the Autocannon for a single rocket shot in order to be a worthwhile choice.  
Quote:
There's been much hoo-hah about the 45cm AA range, but to me it looks like two attacks at 30cm is the real killer. Almost all defensive fire from bombers is at 15cm range, so the lightning (like the nightwing) never needs to decided between firing at full effect or staying outside defensive fire range.
Totally agreed.  I don't think the extended range would justify a decrease to AA6+, especially as it would make the Lightning Attack variant 
less effective at interception than the Thunderbolt, although theoretically it could stay outside of an occasional ground attack shot.  Definitely not worth the loss of the multirole capability the thunderbolts bring.
Code:
Lightning Attack Fighter
AC   Fighter   6+   n/a   n/a   -
LB Autocannon   45cm   AP5+/AT6+/AA5+   Fixed Forward
Twin Lascannon   30cm   AT4+/AA5+   Fixed Forward
Code:
Lightning Strike Fighter
AC   Fighter   6+   n/a   n/a   -
2 x Underwing Rockets   30cm   AT4+   Fixed Forward
Twin Lascannon   30cm   AT4+/AA5+   Fixed Forward
Dave's statistics, but with the extra Rocket shot for the Lightning.
Pricing is a list-dependent thing, but this puts the Strike Fighter as a superior ground attack option, enough to justify the loss of one of the primary aircraft roles, Interception/CAP.  This will definitely push the cost of the Strike variant up to about 100 each, but allows for tactical air support that actually means something, in the lists that have a desperate need for airborne AT fire.