I have a few questions about 440 valve springs. #1- Do I need to figure out which stock heads I have before ordering valve springs? #2- Or will all stock 440 heads except the same springs? I'm looking at comp cams for some new springs because I get a discount with them. Would like to reuse the caps and keepers also. My motor is bone stock basicly so I don't need or want any expensive ones. I'm hoping to get some aluminum heads in the future but funds are low so I'm just going with some new springs for now. #3- Anyone know the comp cam part # of what I need? I'm going to call them tomorrow but I'd like to hear what you guys think before that.