You blew $9.
Dont spend any money on the 3.4. It's a roach, I have one for a DD.
comp makes a cam for it, and you could port the heads, but why? you may get into the 14's but thats still piss ass slow and you now have $3000 less.
Save up and wait to get a faster car. You will kick yourself in the nuts one day if you spend any go fast money on that car.
You will never be as fast as the Chevette...