Replacing the engine/cam help

I blew my engine last night, but I have a explorer gt40 engine that is low k and in good shape so I am going to swap that in for now, my question is, what cam should I buy to put in it. I have professional products intake, GT40P heads and BBK long tube headers, 5 speed, 4:10 gears. I need to buy a cam today so just curious what you think. As well that engine will work fine correct ??

Thanks for allt he help

Travis.

I am thinking about the E303 but I am not to sure on piston to valve clearance wiht the 1.7 roller rockers that I have. I know that with the Gt40p's they run pretty close. Will I have any interferance issues with this cam and my cuurent head/rocker setup ??


Thanks
Travis.

Is there any differences between teh explorer 5.0l adn the one in my car ? like bottom end I mean.


Thanks
Travis.