I'd keep it!
We're running a vintage series at my local club at the moment, the fastest car is an Optima Mid and when you look at the lap times it is lapping only slightly slower than the modern 4wd's ( she flies! )
Get it out on the track and have some fun with her!
On another note as well i've only been back into rc for a few months and have a B4.1 Its a great car well worth the money and a bit more money for a couple of lipos and a charger and you'll be ready to go!