He'd done 2700 hours apparently in the Ghost, a plane whose log book records just 1447.2 hours..
Although it does say 2700 hours on "Ghost", it also says 2700 hours on type - he also owned and frequently flew and raced a fairly stock P-51D "Cloud Dancer".
RARA paperwork, not FAA documents, errors rather than a deliberate fiction I'd suggest - probably reused old forms and forgot to update some info and put the wrong data in another box. Can't really see it as of particular relevance to the accident, just a small fact that the NTSB noted.