I have just acquired one of these myself (MPC) and will be my next adventure as well.
I wonder if anyone can tell me if this kit is similar to the Airfix kit.
The only things that I have been able to find as far as aftermarket for 1/24 Mustangs are the Cockpit Placards available from Squadron.
I plan on correcting the weel wells on this one too, along with a few other things but am looking forward to it as it looks like a fairly good representation of the P-51, other than being old, allot of sink marks and warpage.
Steve