i have the 340bhp 302 w/ the ecam. its ok, i have beat the hell out of it. its not the fastest crate out there (esp.for the money) but it works. when i say i have beat on the engine i mean it. everytime i drive it the pedal goes to the floor, i have over revved it, ran it hard on bad tunes and it still keeps comming back for more. i am impressed that it has lasted this long. most of my mods are in my sig, if i could have done it again i would have gone with a gt40 intake but i plan on doing something wih my heads so i went with trick flow so i had room to grow or i would have gone elsewhere for the motor like suggested above. fyi i got the engine from jenell/genell? ford for $3k, you have to switch some parts over including the oil pan and some front end accessories-it comes with explorer parts. you are right on with swapping the cam, do not use the e cam. my computer hates it. after running hard and comming to a stop my engine always wants to cut out and die. i have to rev it to keep it alive. the e cams drivability with my computer sucks, getting cought in traffic is the worst. it just wants to stall so i end up burning my clutch up to keep it running. i have heard great things about the steeda #19 cam. if you dont choose to swap the stick then get some kind of piggy back computer. do not count on a chip to solve your problems, its a waste of money. i am looking at the Tweecer rt and PMS.
good luck pal,
you can take my suggestions seriously everything i have said above is true please add my thoughts to the overall game plan you have with your mustang. PM me with any further questions, i do not mind answering them at all.
-fawcett