the bore and stroke that you posted seem right for the d15. The d15 is the most common block to do a mini me since most people that do mini me's don't have the goodies to to an entire engine swap, they just take their dpfi heads out and slap a vtec head on there.

As far as compression ratio, I think that with the vtec head you should be above 9.5:1 compresssion if you use a z6 head, slightly higher if you use a y8 head.

I am going to guess that you should be around 118-120 flywheel horespower with the mini me once you're done and everything is nice and tuned.

hope this helps, and remember, if you want to run the p28 ecu (sohc vtec) I can make a converison harness for your ECU for $100 or you can make it yourself (it is not that hard!)

later,
L.