Trx250r03

I turned 18 in april and am set on geting a 7 and as muck as i wanted a turbo i could not afford the car whell now there is a possibility that i might be able to get one because it needs a transmission. it runs and drives now but 2nd and third sincros are shot. so my question is how much are you guys paying in insurance on your turbos per month because i know i can afford the car but can i afford the insurance? The next q is where can i get a good tranny for a 90 TII thanks!