You mean a Big Boss 6x6 - not a Sportsman - what's the VIN for verification
Try powersportsnation.com or Ebay for best results - with Ebay, check the sellers feedback and return policy - cheapcycleparts.com is probably listing parts on there also
Part number 3280363 is $455 from Polaris, can be gotten for new for $350 plus shipping from me.
Thank you for the tip. I took a gamble that the issue was still Speedometer related and found a used one on Powersportsnation.com [through ebay actually] for $200. I spoke to them in person, very nice folks there, quite an operation. I figured if it wasnt the speedometer causing the problem, I'd still be solving my issues with AWD in the long right, so...
Speedo arrived yesterday, much better condition than I expected no less. fully expected to see the same clouded lens and condensation that almost everyone remarks about for this year vehicle but other than some very minor paint scrathes on the bezel it looks great.
Unfortunately this didnt fix the problem. Slapped in the new unit but same stalling at anything above idle.
Back to the basics; Suck Bang Blow. Since it's idling just fine it's got all three. Took the airbox off, no change. Nothing wrong with the exhaust so I figured it has to be fuel. After a little googling around I found a thread [cant remember where] of someone with an ATV [non-Polaris] that was having the same exact issue as I'm having. The postee suggested a neat little trick I'd not thought of [and in hindsight should have!] - grab a can of starter fluid, give it some throttle until it starts stalling again and squirt a little fluid in the crab venturi. Sure enough, it bogged just a second but then BINGO, lots of revs!. So I'm not on the tract that it's the carb. Got access to it [it's buried a little deeper on the 6x6 than the regular Sportsman, larger gas tank I think] but I was able to get it out far enough without taking off the throttle or choke cables to give it an inspection. I pulled the top cover off and pulled the main jet needle assembly out. Diaphram looks okay, needle looked clean and straight and the clip was still in place so I'm thinking it's okay. Flipped it over to pull the float bowl cover off and ran into issues. Two of the cover screws are on insanely tight. tried vice grips, PB Blaster, all I can think of but they're just starting to strip getting them out.
Last effort was going to be pulling the carb completely out to get it on the bench where I could go at it properly until I ran into the [infamous] choke cable nut. I can get a 12mm wrench on it but then it's so tight for space I cant turn the damned thing. Overnight I was thinking that I might need to grind down a wrench to get at it, I was thinking of cutting a notch on the box end large enough to let it slip past the cable. This morning I searched the forum here and see that this is a common gripe and others have done similar, only they ground down the open end to have thinner "tongs". Got to find time to run to the hardware/autoparts store to pick up a new wrench [maybe two!] and get to grinding.
In the interim, I found a Chinese knockoff carb on Amazon for $40 [Caltric I think is the name] that had 83 reviews and a 4 star rating. I figure, what the hell and bought one in case I destroy those float cover screws completely. I'll update this post for future reference to anyone having similar issues. thanks again to all for your suggestions.