Firemax said it best. There is a whole lot more to driving one of these cars than street and strip racing. Unless you just want to beat about anything on the road stick with the stick.
Unless yo want to spends tons of dough and time, they are 12 second cars on the track, not really dragsters.

There are no mods, short of a transplant, that will bring your NA anywhere close to the SRT.

The only reason to own and SRT is the uniqueness of the product.

I myself own an NA and an SRT. The NA is what I drive daily, cause it's fun, it's a stick and it handles beautifuly in traffic and back roads.

The SRT is a stressful contest "should I risk a ticket and blow this guy away?" every time you get on the highway. So unless that is what you are in to, or you just want to own a very unique piece of history, stay with the NA manual.

Right now, I'd stay with the NA, and ponder the concept for three months, while I wait and see if my $100.00 raffle ticket wins me an Aero Blue one at the CAA.

Then your dilemma would be "which of these two beauties should I drive today?"

roadster with a stick