It will NOT pull up there with stock heads.
Your combo is mismatched at this point. The cam is the last part of the combo that's necessary. The stock HO cam has put people into the 12's for years. Now, the stock heads/intake need work to do it.
You've got an intake that will flow to beat hell, a much more aggressive cam, and an exhuast that will pump a ton of flow. It's kind of like getting a hose, a big *** water pump, putting a brake line fitting the in middle before the sprayer and wondering why you don't spray a ton of water out.
The heads are the weakest link in the engine, and since they are the most expensive to replace, people try to get by without working them, or replacing them. Unfortunately, they are the most important part of your combo.
Do you have a T/B yet? The Street Heat intake will be somewhat restricted by a 60mm t/b.
Do you have the stock MAF sensor? To optimize your intake system you need to run a larger unit, the stock 70mm unit isn't a really good base for making tons of power.
In all seriousness, picking up a set of TFS heads could easily net you 80+hp with that combo.
I hope to god you still don't have the factory fuel pump on that thing. If you do the fuel pump itself will limit you to somewhere in the area of 260hp or so.
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