High performance rear shock suggestion?

[xpacpal1x_imp]

I went ahead and ordered these Ohlins rear shocks, relying somewhat on my hope that Ack-CB11 has a good sense for these things and the fact they appear similar to the stock rear shocks. I insisted on the chrome spring, and that seems to have extended my wait time to three weeks, as these must be sourced from Sweden.

Questions for Ack-CB11:

1. Have you mounted your shocks upside down? Is there an upside down?

2. At least initially, I plan to install these rear shocks, but not modify the front springs. Did you proceed in this manner? Or did you modify front and rear at the same time. Any opinion on what I am likely to encounter with Ohlins on the rear and stock springs up front?