I have a 36 year old RX 7, so slowly some places start to rust. Although I’m not the most skilled craftsman, but I have to do it myself for cost reasons. Machines I don’t have, except an Accu screwdriver. I would be really grateful for tips and advice as I best go forward. Also call products. What is the best rust converter ? How to grind ? Which paper ? Which primer ? The paint outside is still good , just behind the wheels and inside at the Unfortunately, doors start rusting. Thank you for your help. The car is from my father and I would like to make it original for me again.