13:1 compression on any of those will be setting your self up for failure sooner or later on a street driven pump gas. Gas around here is too inconsistent to trust with a setup like that in mind imo. Either way you are comparing apples to oranges. b sereis will make a shit lot more power than a dseries. No need to go 13 cr on a b series for a nice quick street setup. Tuning and supporting parts will get you that. whats the power goal?