Chris insists on top mount. Meant for bottom mount, here's a stretch X racer with a prototype frame by race 412.

Photos

Part List

Flight Controller	Matek F405 - OSD Betaflight Flight Controller (102 builds) Racedayquads.com	$29.99
ESCs	4x ESC Spedix GS 30A 2-4S LiPo Standard-Sized MOSFET BLHeli_32bit DShot_1200 (4 builds) Heli-nation.com	$40.00
Motors	4 x EMAX RS2205S 2300kv Red Bottom Racing FPV Motor (164 builds) Racedayquads.com	$79.96
Propellers	5" Double Blade Propellers 5038DCS (Double Crane Style) (26 builds) Racekraft.com	$3.49
FPV Camera	RunCam Eagle 2 800TVL CMOS 2.1mm/2.5mm 4:3/16:9 NTSC/PAL Switchable Super WDR FPV Camera Low Latency (98 builds) Banggood.com	$39.99
FPV Transmitter	Matek 5.8G 40CH 25/200/500mW switchable Video Transmitter VTX-HV with 5V/1A BEC Output (95 builds) Banggood.com	$29.95
Antenna	Pagoda FPV Antenna (17 builds) Race412.com	$3.00
Receiver	FrSky XM+ 2.4GHz Micro ReceiverDefault Title (1151 builds) Racedayquads.com	$15.99
Batteries	1300mAh True 95C Octane LiPo Race412.com	$26.00
Power Distribution	Matek FCHUB-6S Hub Power Distribution Board 5V & 10V BEC Built-in 184A Current Sensor for RC Drone (96 builds) Banggood.com	$9.99