U need a TBI beater car. I got maybe $100 into mine (tons of half ass work)and drive it everyday. Paid scrap price for it.I'm going to strip the other Spirit down. I'm now down to one turbo, one intercooler, one radiator, and, if I'm lucky, one head. We all know I'm definitely NOT lucky, but it's worth a try. I'm all out of money and running cars now.
I don't know what you paid for those Spirit RT'S but I'm guessing both owners knew the cars had major problems and were just trying to get money and screw someone over. I have never had even the cheapest $20-30 cars I bought blow up that quickly.
I got my RT for $400 and sold it in running condition for cheap. I couldn't afford $500+ for a fancy clutch to handle the power and the car was getting ratty from sitting.
I have a 1 year removal rule for anything sitting. If you can't get to it within a year it's just gonna sit forever and become a lawn ornament...