05 magnum rt looking to do a few mods

[Mmob8999]

First does anyone know if a factory cat back from an 08 srt8 will fit my car ? If so what would be the positives or negatives if any ? Also what's the recommended cold air intake ? Thanks in advance for any advice.

[NOTPAID4]

The 08 SRT catback should fit, however you will need to reduce it from it's 3" to the 2.5" of that on your RT. It should give you a little more power as the SRT are a little more "free flowing" than that of the Rts.

If you ask 20 people about CAIs you'll probably get 20 different answers. I have some different ones on my cars. I have a LegMaker "Hammer Design" on my SRT, have a Big Bully on one of my RTs and a K&N on my other RT.
IMO the Legmaker is the best, however the most expensive. Money wise, I'd recommend the BigBully ~ about $100 less. IF you want the BEST then I'd say the LegMaker!

And from a SIX MAGNUM family in North Carolina.

[Mmob8999]

Thanks a lot I appreciate the input.

[steadiman]

I get the why of cold air intakes, but I don't get the why of the why factory engineers supposedly haven't already designed optimal air intake for factory engines.