sleeping stallion

oki dont no what way to go with my car. either aftermarket heads and cams plus full bolt on.
or for around the same price as heads and cams combo i can get a 98 cobra motor with a 5 speed tranny.
so i would replace my auto with that i really wouldnt want to because i like my auto but if i went with the cobra i would get a different tranny. i have about 2000 in my bank right now so by the ppl help me decide i will have another 500 or so in a couple days