Savage on 6s which motor, 10XL or KB45 8XL???

Well I decided to go with the KB45 8XL 1700kv with my 6s lipo and turnigy 100 amp HV esc. I hope it runs good as the turnigy esc is supposed to be pretty cog proof and I am still under 40,000 rpms.

I havent decided which will be easier drill a new hole in my savage motor mount or remove the KB45 end bell and drill and tap a new hole. I am leaning towards drilling and tapping.