A Yeah no problem. One note, these are clutch fans which require a thermal clutch. Hayden makes a ton of different clutches for all applications. There are 3 duty classes, standard, heavy and light. A lot of guys like the heavy duty clutch but Hayden rates these based on fan pitch. Even the deeper mopar blades have a 2.5" pitch for our cars, so the standard is fine. There is one clutch that is the original dimension, but keep in mind that they make them for low clearance applications as well. Google mopar jaguar Hayden clutch and you will get plenty of reading as there was one clutch apparently made for jags that fits ours. There is some debate about it being strong enough for our metal fans (I read that jags use plastic), by again, Hayden rates theirs based on pitch and the jag fan being standard duty is fine for our fans. I chose a standard duty fan clutch with a dimension somewhere between the shorty jag clutch and the original oem mopar, which Hayden has listed for a Chevelle I think. It's worked fine for over a year now.
You mention the fan fitting the hole, so I assume you have a shroud. Since you have a fan already, I would measure the proper diameter fan for that shroud by just eyeballing how much more fan would fit - keeping in mind that you want 1/2" of 1" clearance all around.
Also, measure for depth, keeping in mind that the fan should be half in/ half out of the shroud for maximum cooling. you'll need the new fan to do this as the new fan's mounting flange is likely to be at a different depth from the face of the fan.
A lot of info you didn't specify ask for, hope it helps!
Happy Moparing.