Headache. Unless you own your own wrenches and have a garage to work in and love to fix things. The low miles are insane. There is something way wrong there; like it has been sitting up for 30 years or so. OR the speedo has been replaced with a newer one. But further information is needed. Have you looked at this thing? Do you have pictures? Is it rusty, both underneath and in the tub? Too many questions, too little information. But all in all the answer to your question as to if this would be a reliable vehicle, the answer is: no.
Hey guys, there is NO SUCH THING as RPMS. There is NO "S" in RPM.
A little knowledge is a dangerous thing, but not nearly as much as ignorance.