I did the move from a modded srt 4 to a srt6.

a 2004 SRT-4... and i loved it. I had quite a bit invested into it.

Boomba Engine Mounts
Borla Cat-Back
CCA Front Mount InterCooler
JMB Pipe w/Greddy Type S BOV
AEM CAI
Maddog STS
MaxxFabb 3in o2 Housing
Mopar Stage 2 w/ Toys
Needswing DP w/McCord
Ported Intake Mani
Ported Exhaust Mani
Ported Turbo housing

36-Way IPP Coilovers
Front/Rear Strut Tower Bars
Mopar Super Center Cross Drilled Rotors/Brakes
18x7.5 Nex-o rims PX-5
Upgraded Sway Bars

AEM Uego A/F Gauge
Mechanical Oil Pressure Gauge
Tech Gauges

When I autox, i swap out my rims to 17x7 Centerline Storm Rims wrapped in Azenis RT-615. And when i hit the 1/4 mile track, i'll go with BFG DR's with stock rims.

It was a great car... I ran 13.4 @ 108 on street tires, if i would of tuned the car and leaned it out some, i would of been a lot faster When i Autox, it handled like it was on rails with the 36 way CO's, but the day to day driving was really hash.

I made the jump, and it was NIGHT and DAY difference... Though i think i could of probably run 12's on slicks with the srt4, i ran 13.06 on all season conti tires while being 100% stock, infact i still had the dealer plates on the car. The handling is responsive and very livable.

I run a SRT club in chicago and trying to get others to jump the srt4 ship and jump up to the srt6.