As long as you get one from a reputable company, a cool head is a cool head. Make sure you install it correctly and you should have good luck, no matter the brand.
That would be too much like science for him. If you read some of his other threads you will see he prefers faith and tin foil hattery to science and facts.
I have 172 mains in my 35 PWKs with VF3s, T5s, +4 timing and 21cc domes on ported stock cylinders at sea level. I don't know how PJs compare to PWKs though.
To get an Oregon OHV sticker all you need is the VIN off the frame as far as I know. I have the title for my Banshee, but i have never bothered to register it and have never had any problems.