Thankxx 4 the info. I see what you mean about blending but had zero issues blending 110 Rocket leaded w/91 Cally swill and plugs looked good and car ran great and was told ON HERE that it was fine. When I meet up w/the two machine shop owners next week I`ll see if they sell gas, what they have(if)and go from there. I drive my dart more now them I have in a long time and $$ does play a role but a happy motor is my major concern in case I have to educate someone on a side road late at night.