Ok this has probable been mentioned before but have had trouble finding any topics on it. I've been slowly doing up a 73' FJ45 and have been attacking the chassis with a wire brush and sand paper. Problem is internaly i have no way of getting to the rust. I dont want to pull the cab off but at the same time i dont want to be just painting rust. is there a solution that can be sprayed on or do i try and sand blast? Any advise would be great. Cheers