I'd leave it in, maybe pull the front clip tops. I've swapped cams before with the front clip in but had to tilt the engine since the front core center support was right in the way, thought about just cutting that little piece out, then you only need to pull the radiator. Had to pull the radiator at a minimum. I'd just pull the radiator and maybe the front clip, then you can leave on the heads, exhaust, intake, converter, bellhousing, etc.
If you turn the cam over a couple revolutions after you take the rockers and pushrods out you should be able to swap it with the intake still on, if not you may have to use some TIG rod or a coat hanger to pull a lifter or two up(not out of the bore) to get the cam to slide in. Be gentle and don't force anything, use the sprocket as a handle and try not to damage the cam bearings.
The cam is really going to wake it up when combined with your Terminator X tuning. Program the timing at 28 at WOT for a reasonably safe number. If you have any questions let me know.
You will get that rocks in a coffee can sound you wanted and with that 6 degrees advance built into the cam you will still have a nice torque curve.
