a 220-230 would like a bigger stall but will make so much more torque down low (with compression increase) that it wont matter for street driving... only thing i would buy from clifford is there intake... call erson or anybody else and have a custom ground cam for your app... only 125 for a custom cam from erson, less than a comp setup...
OK - my opinion only...if your set on making this a BB conversion don't spend the time or money on the 6 unless you have an unlimited budget and can afford 2 builds