the pistons in the stock b2200 are 8.6:1 so if your not runnin more than 10 lbs of boost you should be ok. i think the 626 had a comp ratio of 8.0:1 so there isn't much difference.
i have all the stuff for mine too, but did you get the 626 engine? or an mx-6? cause isnt the 626 a 2.0?
and dont worry, its a fairly easy swap if you take your time
die s any one have pics of the finished projects? im going to be doing one in the future and want to see what the end product is... what kind of horse gain do you get from a mx-6 turbo swap?