its my old saff too lol, unfortunately the mate i bought it off lost most of the history. this really is a good solid car. when i bought it off my mate it was sat on blocks with no wheels, no suspension, half the engine missing ,no bonnet, no exhaust etc. my mate painted engine bay black as he was going to do a full respray on it but didnt get round to it. the car underneath is in real good nick and can confirm its not been welded.i spent alot of money sourcing the parts it needed to make it road worthy and legal again. but it was worth it due to condition of the shell.
I swapped this car for the s2 in my sig(43,000 mile) the saff was a good stage 3 spec back then with lots of shiney and carbon goodies in the engine bay although they all seem to have gone now.
my advice is to keep it mark, get bodywork tidied up and engine bay painted as lots off people love crystal blue saffs. its only going to go up in value.