I have a slant six in my 70 Barracuda. I'm going to convert to a small block 360. I have a 26" radiator that I had in my 73 Challenger. The 26" doesn't line up with any of the mounting holes. Do they make a mounting plate for the passenger side or will I need to replace the whole radiator support? I currently have a 19" rad. Should I use a 22" rad and forget about the 26". I want to add A/C eventually. Thanks