The BoldClash Bwhoop-B05 flies great. Sadly mine broke on the third crash.
Here is an alternative to the Bwhoop-B05 frame. This one comes in about the same weight at 4g, 24g once fully assembled and is alot more crash worthy. Well for me it has. 68mm motor to motor. designed to be a direct swap. Just remove four nuts from under the frame and uncrew the motors; a reamer or tiny drill might be required to open up the openings based on the the print.
Or build a Bubo68 using the following components:
Frame update:
http://shpws.me/R05QWorks well with any of the materials made available although the professional plastic seems to print a bit more true as expected.