Dave, I used the Great Stuff/Gaps and Cracks (Who runs the marketing at Dow?). It is a 16 oz can from Home Depot. It must be a special size for HD as I don't see it in the Web call out.
When working with this product use a drop cloth, wear gloves, do not play with it until it is hard (cures). As I said somewhere I stuck a 16" piece of clear 3/8 ID hose on the straw tube and taped it. The can has to be in the inverted position to work. I then started at the middle hole with the tube stuck 6" in the panel and let it rip for about half a can. Then I moved up to the top hole and let the rest of the can go. My shop is about 60 degrees F. The can was 70. I am not sure what the best cure temp is. It took about a day to cure but as I cut away chunks that had pushed through the panel holes some uncured stuff started to grow again. The pile grew over the wheel well to the gas cap cable on the left side and about the same on the right. The foam is a good sound deadener as you can get anyway so it is easier to let it go than try to get in with other product there. There was no real pressure. I glued in the panel but it did not flex. I thought this would be the relief valve if the foam went nuts. It didn't. My unlived horror was to go to the shop in the morning and see a new shape to my MINI.
