I have obtained a NOS Kit# 5120 super cheap from Craigslist. This kit is brand new. The Holley website says that a 1999 Mustang GT requires kit# 5116. I can see no real difference in these kits. The 5120 is made for a 3.8 Tauras SHO. This kit is supposed to be a 75-125 dry system. Is it safe for me to go ahead and use this kit on my Mustang. What (if any) problems could arise? Again these kits appear to be almost identical as far as I can tell. I didn't know if maybe the solenoids would be different or what. Any information or opinions would be greatly appreciated.