Nope.

Look, I have a 6 spd. I have taken the NA engine about as far as it can go without going to forced induction. Or spending thousands for headers and hardware for a few more HP's. I dyno 192.5HP at the wheel.
Cathy's SRT dyno's at 300HP at the wheel right now. A quantum difference on the highway.

When I am in the NA and want to pass, I downshift to 4th and within a few seconds I am accelerating around the big truck.
With Cathy's SRT one simply has to think about it and....it's done. There simply is no comparison.

Now as OleDoc2U suggested, the manual tranny with some added power to the NA is a fair match to the SRT "in the twisties". But as soon as the road is straight for more than a quarter mile, they are gone man. You simply can't stay with them.

If you have been to the Dragon, there are 11 miles from the lake to Deals Gap, 318 turns and curves that never stop. You can hang on an SRT the whole way. He never gets to use his power. But, after Deals Gap is the Hellbender. Plenty of tight turns with some long straights. Six miles later, Ole Doc will be sittin' on his hood, halfway thru a cigar, waiting for you at the lodge.

My advice, Get the TVT 300 tune package. You will have the engine power the car should have had from the factory. You will absolutely love the performance. The improvement will have you saying that your car is "on fire" and your new Crossfire will have you in love all over again.

It's not better than sex . But damm, damm close.

If you want better than sex, get the SRT.

roadster with a stick