Ifs is like mustang II style. I have a 460 in a falcon and installed Sanderson shortys although had to move the flange back one hole and retube on side. My engine suffers with these. A real header will really help torque and upper rpm power. I use a stainless flex fan on the waterpump, a cicular metal shroud ala streetrod and a elec pusher on front. Ran hot with other combos. I have a temp switch on the front elec. Radiator is a custom vette crossflow with ford tanks 3 row. Still overheated till above combo. Without welding shop tools ,an ifs will be $3000 easy for someone to put one in. I bought my crossmember from rod&custom motorsports. Used old ford and chevy stuff to put it all together, ex granada rotors and monte carlo calipers.