without knowing the details of newmans finances:
sell the Lotus and the turbo kit. keep the STi and do as you please with it. you then have a quick, good handling car that you can drive all year round. i think (in general) until you’ve bought a house, payed off student loan, and have little to no debt (with the exception of a home payment or something) then theres no reason to have 2 cars. if i could go back a year and a half, i would have kept my Porsche (because i didnt pay very much for it and owed nothing on it) and bought a reliable DD rather than blowing 10 grand on something i choose to only drive 6 months out of the year.