What trucks should I use for this?
SURF JR. SPECIAL SHAPE - WITH WHEEL WELLS
8.75" (WIDEST POINT) X 31.5"
NOSE: 6.25"
WHEEL BASE: 14.375"
TAIL: 6.5"
On shaped boards like that, you don't base your trucks on the widest point (that's egg shit.)
Rather, you base them on the narrowest point (usually the back truck).
Reason is, if you hot-hod your back truck, then you're foot will hit the wheel while pushing, and you'll eat shit.
So, take the width at your rear truck, and that's your answer.
Prolly around 8.5 in your case...maybe less depending on the width of your wheels (which makes a huge difference.)
Indy 159
Ace 55