Which is the real limiting factor on a stock 5.0?

[88workcar]

Thank GOD that no one has taken my post wrong. I never wanted to upset anyone, but I want to get my point across. My car will get weighed Wed or Thur night this week. The last time I weighed it, it was 2900lbs with me in the car. Now it should come in at a high 2700lbs. I never post when my car has me stumped. But too weeks ago, the dist. went out. Now the torque boxes are demolished (OLD 1.5s 60fts) The biggest set back lately was that I spent $450 to have my old, big valve, ported, shaved, E7s redone and the gaskets and too days of wrenching. Only to fine that the head shop screwed me, one head is cracked. Yes they say that they checked them. Well today I called POWER HEADS, I thing that I am going that route. I want 12.00s on a pair of E7s. Yes I do have NOS, I don't have a cage so I don't use it at the track. I did bust a guys butt two weeks ago on the street with it.