They are just the 4" (I think) round ones. They are holding up well to our winter up here. They still look brand new with all the gravel our roads have thrown at then in the last 10,000kms.

 

So what do you guys think? Right now I only have a home made K&N CAI. I am looking to add:
Nerf Bars
http://www.autoaccessoriesgarage.com/Running-Boards-Side-Steps/Nasta-Oval-Step-Bars?utm_source=google&utm_medium=Running-Boards-Side-Steps&utm_campaign=GoogleProducts&utm_term=Nasta-Oval-Step-Bars
Tailgate lock
http://www.amazon.com/Pop-Lock-PL3400-Manual-Tailgate/dp/B000C19DL4/ref=sr_1_3?ie=UTF8&qid=1326427940&sr=8-3
Bed cover
http://www.buyautotruckaccessories.com/product.cfm/cf-bin/pn.lund-genesis-roll-up-tonneau-covers/doapps.1/#apps

Electric fan
http://www.summitracing.com/parts/FLX-183/?rtype=1
Muffler
http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=9363
X-pipe
http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=9764

Also looking for headers, I have not decided which 1 yet, any ideas?

 

just a tip, the flex a lite from summit racing is 340. but if you search amazon its 251 brand new

 

Thanks. I see that now. Any suggestion on headers?

 

On your bed cover, check out retrax. I've got one on my 3500. It started on my 1500 and works well. Its sturdy, looks good, and with a locking tailgate, can be locked to secure your gear.

 

Does it open all the way to the front of the truck. I have an atv in the bed alot and it barely fits now.

 

You lose about 6" at the front for the canister. It is removable with 4 clams removed.. not the easiest way though...

I've had an ATV in the back of mine, I just left the tailgate down.