Could i get my caribbean cruiser to hit over 30 mph paying only around $100-150 on mods.

wellll... maybe. You could get the 700bb turbo with ESC combo for about $100. Then you would need a new prop which I can help you balance and get setup. And then you need other acssesories such as motor mount etc. Cheap things. Plus If you wanted you could get better 6 cell packs.

To get a 700 motor do i need to change the msc?

A pair of 19turn Chameleon motors would really wake your boat up!,,, probably close to 30mph, with good run time, but just watch your heat, you may need good water cooling.

Thanks for your replies!

What speed could i get if i put two 8 turn trinity d5 motors in my boat or is that even possible without changing the esc?

Hi,

8 turn motors will draw massive Amps, give you lots of revs, need smaller props to make use of those revs, and will probably smoke the stock ESC...
I expect the runtime to suffer too.

Watercool them and buy spare brushes.

Moderate turns will probably work better.

Greetings, Jan.

What about the 19 turn chameleon motor.