Enthusiastic, definitely. Hard working, sure. Wealthy? That would very much depend on how one defines it...
The alternatives would otherwise be a Golf GTi (which the person on whom this character is partially based actually drove), an Escort XR3i, Peugeot 205 GTi or Astra GTE...
They don’t seem to sell factory approved modified cars new anymore, back in 1989 I had a new (small bumper) Golf GTi 16V bought as a company car from Castles in Leicester and specced it with a GTi Engineering RE1900 engine conversion, full colour coded bumpers and arches, BBS body kit and 15” Ronal alloys, it was a bit different to the rest of my colleagues area manager spec BMW 520i’s and Merc W124’s, I did 125000 in three years in it.