Anyone have a set of Poly racer seats in their FOX?

Looking at going with a set of Summit's seats with the Holcomb brackets

Seats - http://store.summitracing.com/partde...5&autoview=sku

Brackets - http://cgi.ebay.com/ebaymotors/Musta...8181QQtcZphoto

I know the seat will need braced to the roll bar as well. Does ayone have a combo like this? How is the seating position compared to a stock type seat? Are they effectively lower? Can you get them back further than a stock seat (with harness bar).

Not doing this for a while, but looking at options ;)