Sorry for late response...
I looked thru their website and with the help of Google translate from Czechoslovakian managed to find out +100km/h (+62mph).
Edit: I am not sure how that boat is setup... The engine looks to be sitting very low, probably not enough setback, no nose cone and/or low water pickup and the propeller is n/a - all these are factors when it comes to handling and speed. Who rigged it? If Allison Boats or other well known did I am sure it is a +70mph boat. From what I have seen from the Evinrude e-tec 115HO (same engine as the 130?) with the right setup I am sure it will do +70mph, just like msethsmile's...
I would ask myself the following questions. What do you want from your boat? Do you want to be a member of the 'century club' like the c-note you refer to? If so v6 power is your ticket.
I too have the 100mph ambition but in my own tempo. This season wind and lack of time has stopped me. 6 times out so far where half of the times I have had passengers... I am at 97.7mph so far and in no doubt 100 will come next try... I have a thread on here about my setup:
http://forum.allisonowners.net/index.php?threads/ss-2000-mercury-200xs-setup.15818/