XT90 are big plugs with 5.5mm pins (good for about 4000 Watts) but in a narrow fuselage without a lot of space it might be a struggle. They are designed for SWG10 but you can get away with SWG12.
I bought a big bag of them, some for my Extra 300 EP because at 40+ volts the spark used make ME jump! Also fitted on "Jacob's" Angel and a few other planes with 6 cell and upwards.
