ive rode a Z 370, and was impressed with the ride. i rode the 99 model and it was alright overall. for trails and such i assume it would be pretty nice, but for agressive riding it is shortchanged on power, good sled for kids, the step up from a kitty kat type sled. when i rode it this year i couldnt even stand it after riding my PS 600, but i was used to having lots of power. great sled for the wife and kids tho....
as for the original question...(LOL @ getting sidetracked) i dont know how much a reverse kit would cost...sounds like you found out tho, maybe u could put it in yourself?? what does it involve, a whole new chain case? or just the cover and different gears?