528 cubic inch moparaluminum block hemi prepped for alcohol with a whipple supercharger and a 5000 rpm torque converter.....I had a whipple on my trans am back in the day and that mother f'er sounded so damn cool.......

 

Hands down, and exhaust system. For two reasons: 1- I hate the look of a stock tailpipe, because Ilike a symetrical exhaust and a single ain't it; and the stocker is just too plain. and 2- I love the sound of a good exhaust system.

 

Couldn't agree more, first, exhaust for sure!!! Also, I'm big on the symetrical thing to, I hate the single pipe stickin out, either two pipes or cutout.

 

again i back the exhaust - a hemi doesnt sound mean enough without the right exhaust

 

Torque Converter. Best money I ever spent. You don't realize how crapy the stock one is untill you do it.

 

Curb feelers!

I would say Nitrious.

 

Replace the drivetrain...stock engine was bad valve springs; stock trans worries me; 2 piece drive shaft is a no-no; stock rearend with LSD likes to kill itself.

So I would replace the entire drivetrain.

 

well, if 1 mod meant 1 package in the mail type deal, or 1 single purchase, I would say the Banks Big Hoss Bundle.

 

i would probably cram as many kazoos as possible into the exhaust pipe [sm=smiley36.gif]

 

I would have to go with exhaust as well...thats the first mod I did a week after I bought my truck. I would really love a lift right now though, so I guess it would depend on when you ask! LOL