FYI....I just ordered a Boss Highrise Shorty for my Pro X that I'm converting to a 136 and making into a PRO-X-RMK. The Boss Highrise Shorty is 3in. taller then stock, and 4in. shorter then their standard Highrise which is 8in. shorter then the standard Polaris seat. They are ultra-light - 6lb, and the foam they use is specific to rider weight (different densities for different weights).
The space between the front of the seat and gas tank that is like a "valley" on the Polaris Shorty is actually "filled in" on the Boss. I don't forsee sitting that far foreward, but you never know......I just like the integrated look. This is my opinion, but its an option you might want to look into.
I hope you find what you are looking for and good luck. -Sofa
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