i have the power pros right bend pipe on my blaster which is the same thing as the f7 pipe without the f7 sticker. it works great has good power all over from bottom to top but i also have a +3 stroker and my cyl has been ported by Flotek. but if you have the toomey pipe already i would spend the money and get your cyl. ported that is where the real power is. Flotek will work with you on your project too Awesome guy to deal with!