What cam with this combo?

[Agent_4573]

Ok, so come this spring I'm putting in some mods but im not sure what, if any, cam i should put in there with it.

I'll be running pulleys, 65mm tb, gt40 upper/lower intake, gt40 heads, off road h-pipe, t-5 tranny.

I still haven't purchases the heads/intake, there the big mod for this spring. I have everythign else on the car though. When i put the heads/intake on the car, should i replace the cam with something a bit bigger or should i leave it stock? I figure since I'll have the entire upper end of the engine apart, i mine as well replace it. Whats your opinions, keeping in mind im doing this on a severly limited budget. The car is used as a daily driver, with a visit to the track every now and again. But i want to get some balls in it. Thanks for the help guys.

I'm probably going to be keeping the stock rockers on there, so how big of a cam can i go w/ them and the stock pistons on a ported and polished gt40s?