Vin says 6×6 but only has 4 wheels

I need to know more about my atv iv never owned one before and this on is a fixer upper. More of a project for my boyfriend. I looked up the vin and it says it's a 03 polaris sportsman 6x6 but it only has 4 wheels. And I'm not sure what cc it is either I think it's 400. What other numbers can I use to identify which exact atv I have. Where is the model number located. There is no plastic on the atv either so hard to compare with photos

Plans for Winter

In the winter after snow falls I can't ride my machine (I have no interest in getting tracks at this time). My machine is 2018 Renegade 1000 XXC Triple Black. Currently I am planning on getting some work done. Figure I'll send my ECU to Monster EFI to be flashed, get a new primary CVTech or STM (likely keep stock secondary) and then wanted to have my bike dyno tuned. I have a PCV, exhaust, snorkel now.

Question 1: Where is the closest ATV dyno shop to Maine? I've struck out in New England, just need to know where I can trailer it.
Question 2: Should I have it dyno tuned before having my ECU flashed? I figured it would be better to do after but thought I'd ask.
Question 3: See my sig I have a lot of mods now but what other mods would you guys suggest? I was considering 1" wheel spacers for improved handling.

Plans for Winter

In the winter after snow falls I can't ride my machine (I have no interest in getting tracks at this time). My machine is 2018 Renegade 1000 XXC Triple Black. Currently I am planning on getting some work done. Figure I'll send my ECU to Monster EFI to be flashed, get a new primary CVTech or STM (likely keep stock secondary) and then wanted to have my bike dyno tuned. I have a PCV, exhaust, snorkel now.

Question 1: Where is the closest ATV dyno shop to Maine? I've struck out in New England, just need to know where I can trailer it.
Question 2: Should I have it dyno tuned before having my ECU flashed? I figured it would be better to do after but thought I'd ask.
Question 3: See my sig I have a lot of mods now but what other mods would you guys suggest? I was considering 1" wheel spacers for improved handling.

2019 Outlander 650 MAX XT weight

2019 Outlander 650 MAX XT weights 32lbs more than the 2018 model.

I know plastic ends on bumpers are now metal and suspension was changed, but 32lbs?

Does anyone know where all the extra weight is coming from?

ATV lurching forward and in reverse

Last weekend I broke the chain on my 97 sportsman 400L. Since putting on the new chain and tightening it whenever I put the atv in gear and accelerate the bike has this constant lurching feeling in both forward and reverse. A friend of mine seems to think it is the clutch belt from revving the machine up and not going anywhere but wanted a few others opinions. What do you guys think?

Thanks again.

Southern Ontario riding

Are we any closer to legally riding are insured and registered machines(ATV) on the sides of roadways south of highway 7 as allowed ln Northern Ontario