this truck is breakign me

I was so happy to buy my first car, I found a nice 99 Chevy blazer with a 4.3, I did beat up on it like any other 17 year old would, but nothing to crazy well as you might have guessed the motor suddenly went out while on the highway doing about 50, no warnings, no knocking just died. So I had to break down and buy a replace a new motor.

well I joined the navy{ which means I am broke all the time} and I drove it from Shreveport, LA to Virginia beach when I got stationed there, well the second day I had it there they rear end stripped out on me. A few days after replacing it the newer motor I put in it blew again going down the highway. I don’t know what to do i had to leave for deployment, and I know that after 7 months out to sea I get to come home to a broke down 4.3 vortec, I guess my best bet is to put a junkyard motor in it, and buy a Toyota!