Here is a little that I have heard: The best way to strip a frame is by "dip striping" it. The problem is, if you ever had anything dip striped, they tell you to get primer (or some rust treatment) on it as soon as possible. The problem lies in, how do you make sure you got all the little "Nooks and Crannies". Being in the "telephony" bussiness (thats Telephone Man to you Bud) I notice that, back in the old days, when working with open wire (no insulation) they would get a "corosion" on them from the elements in the air. This would create an isulation and even if the wires were touching each other as long as the "corosion" was not rubbed off, no problems would result. Therefore, here is my theory: Blast the outside, including any inside areas you can, prime it with good automotive primer, and paint it. Don't worry about the inside. Do get as much of the dirt and mud out of the inside that you can but, I fear that removeing the inner rust with the possibility of not being able to completly recoat it may be more harmful then just leaveing it........Now, if the frame is sooooo pitted on the outside, that the inside, is the outside, a new frame may be needed............. Besides, I'm not sure that the inside of the older frames ever had anything on them, even when new..................Steve