I can sympathise with the 'modern cars are too complicated' standpoint, this, my only breakdown in the Spyder to date -
was caused by this -
a modern, multi spark ignition module I'd added for extra reliability, failing under full power.
I've got to say though that changes can be made to the donor that will transform its 'feel' as a car. Tall sidewall tyres, different exhaust, removal of soundproofing etc. My Spyder doesn't feel anything like a Triumph Vitesse to drive now it's wearing its party frock.