Performance Plus CartsYamaha G14, G16, G19, G20, G22, G29 Golf Heavy Duty Rear Springs

I have a 2016 g22 with a rear seat. Steering wanders badly with rear passengers. Would these springs cure that ?

Will this work with a 6inch lift?

Will these springs fit a 2018 Drive 2 fleet with gas carb engine?

Are the springs compressed