06-08 Polaris IQr Mod

I have been interested in going back to Polaris. I am looking at buying a 06-08 Polaris IQR. I am just looking for something standard at this time with hopefully no motor. I was interested in installing a 800cc to replace the 440. I am also looking at installing a tunnel extension with 2" paddles. Here are some questions before I get started.
Will the 800 fit ok without any huge mods for room?
What good looking tunnel extension are out there? 121 to 144or151"?
Will there be any clearance issue with the 2" paddle tracks?

The last seld I custom built was back in 2003. It was a skidoo rev with the beaver tail. That sled needed all new 04+ footwells & chaincase for clearance and was hard as hell to find a tunnel extension.
Any information, or posted websites would be greatly appeciated!
Thanks
Kevin

Modme

Thanks for all of the information you listed. I have not been building anything for the past couple of years, but before that I was buliding Skidoo. I did however have a 05 RMK 900 151" that I played with. That thing pulled like a rocket when I got done with it, but the bad rap those sleds had, I lost tons on it.
Can you tell me what the difference is between 05, 06-08 IQrs? I think I found a site that listed replacement plastic parts for the 06-08 and seeing that, makes me believe that 06-08 are the same.
I am interested in either buying a standard roller or finding a bulkhead and working up. I'd rather buy a roller, because I'd have most of the parts, minus tearing it down and installing a VE tunnel.
I was thinking about going with the roller also because I think it might be hard to find a good bulkhead and then all the little parts that would cost $$$ from Polaris.

pix

Do you have any pictures? My email is Hiperf2007@bevcomm.net.
Your phone number looks like your around the Michigan area?
Oh, 509 is WA. I'm from Minnesota. Thanks for the offer, decent, but it would be a long haul.