I think that would screw up the 4wd by changing the chain gearing. Its already a weird setup they have now because of the different size front and rear tires. But that would work on a 2wd quad though...you could make it acc quicker by going to a smaller front sprocket and/or a larger back sprocket, but you will give up some top end speed
j carey, not to get off subject, but... is that actually your quad in your avatar pic with the skis? If so, mind sending me some pics, and maybe a quick description? (all home made / store bought....) Thanks. obviously I think that's pretty cool!
I have a SS Wileyco RS46 Header pipes and slip on muffler that will certainly help.
It has the USFS spark arrestor screen already in it and you can not beat the price of $150 plus shipping. (My turn to pay it forward).
I have pictures of it on my website at http://mnolte.sasktelwebsite.net/.