Baja warrior 5.5 torque converter swap

Your question was already answered. Why do you keep bringing up this engine? Bolting the backing plate onto you engine is the least of your worries. Check youtube videos specific to your bike for the rest of the installation issues.
I was hoping that others with my same bike and motor would give input before I start buying parts lol sorry. First project mini bike
No problem. Go on you tube. Then click on the notifications bell. You will have a response to your question in the comment section. In that video he installed a torque converter on a 5.5. You may not have watched the video to the end. At the end of the video you can see 5.5 on the blower housing of the engine.