The biggest restriction on these motors it the stock heads... if you want to make any power those heads have to get worked big time or swapped. The gt40 heads are cheap and a decent improvement over the e7's but won't give you 45rwhp like the higher end heads plus you don't have all the supporting mods to get the most out of a head swap. Remember a 93 cobra which came with the cobra intake, cobra cam, 1.7 rr's, 24lb injectors, cobra computer, 70mm meter, 65mm tb, ud water pump pulley and gt40 iron heads didn't make 300 to the wheels.
The stock cam has been proven to make great power and on a street only daily driver why would you want to raise the power band higher? i'd say stick with the stock cam there have been people in the 11s I believe on corral.net running the stock cam.
Stock mass air flow sensor is something like 55 or 58mm where as any aftermarket meter is going to be anywhere from 70mm to 90 plus.. the stock throttle body is either 55 or 58 and a mild to stockish car doesn't need more then a 65mm and yes the stock upper/lower sucks balls but replacing these three things aren't going to net you tons of rear wheel horsepower but coupled with a head swap you will.
Just some things to think about... you could do the meter, tb and intake swap now and save and do a head/cam package later after you figure out what power level and rpm range you want the car to hit