Here's some basic step you need for this conversion
1) widen the screen cutout on the RX body
2) filled the firing button and and sand the + - buttons
3) countersunk the 510 ,filled the existing hole with metal putty and sand it off
4) (battery tray)take out the connectors of the 3rd cell and drill a hole for the 510
5) have to run wires for the 510 on top of the tray, need some cutting and sanding. I don't have any photo to show but you'll know when you gutted yours
6) 510 will be the last thing to to solder after putting all thing together ( I use steam crave BF 510)
7) cut out a squonk hole and done