Mate i totally know where you're coming from, trust me but things like that do happen don't they!!!
I know people who track/race big bhp evo's that have spun shells during the first meeting/trackday for example or had turbo's let go after spending 10k plus on a 600bhp odd build....it's total shitbox but they just get rebuilt or left ot one side for a bit while the funds are raised and off they go again.
As you've mentioned, might be a better option to go for something more purpose built and possibly more reliable than a cossie but would you be as happy in something more common that you might not have as much love for as you do the cossie.....bet you get so many people looking/asking about it