Recent content by SNMRAD

I HAVE A 1975 RD350 THAT I WOULD LIKE TO CHANGE OVER TO A 4 STROKE MOTOR. MY QUESTION IS : IS THERE A YAMAHA 4 STOKE THAT WILL BOLT ON. I KNOW MOST 2 STROKERS WILL THINK THAT I AM CRAZY BUT THE BIKE IS A LITTLE TO SMOKY AND LOUD FOR MY TASTE BUT I LOVE THE LOOK. THANKS FOR YOUR HELP.