You could easily pick up a project 1500/1850/Sprint for that kind of money.
Hell, you'll even get one that's tax'd and test'd for that money, although the bodywork or mechanicals might be a bit ropey!...but you'd be surpised how many solid cars you can find for less than that - I spotted a nice, sound 1850 in BRG being sold by a gentleman owner for 50 quid in a local rag...
Enough from me
Look very agressive de-bumpred. Standard Sprint engine is 127BHP (under-read from the factory), potential to ~220 reliably. Standard 1850 engine is 91BHP, with up to 150BHP availiable. IF you go for the 1500 or 1300, they can tune up to 120BHP and are hillariously revvy engines.
Bear in mind that the 1300, 1500, 1850's and Sprints are all rear-wheel drive with a 4 speed / 4 speed manual overdrive (6 gears in effect, with potential for 7). Only the FWD's are ...FWD...
They're not as "common" as the fords, are more interesting, with nicer interiors, better handling as default and more power. There is a host of aftermarket tuning parts, body addons, alloy wheels, interior alterations, and reliable, next day parts suppliers.