Cart noob need help. Motor mounting

Pretty sure I have a PRC GAUNTLET it has an steep angled mounting plate to the point where gas flows out of my overflow (mikuni predator 212) I need to know the correct mounting system to get my carb to ride neerest to level. Cant do flat cuz it will hit the rear tire . Also looking for 212mm×5 rear rims and 130mm×5 front rims