I currently have 2 cars, a turbo swift gti that makes a touch over 150kw atw, I’ve campaigned the car for a bit over 10 years in various hill climbs / track days / drags and has now been retired (as I’ve had the gearbox out 6 times and am sick of breaking it. Last gearbox held together for only 1200 kms). The swift will live in the garage and only be occasionally dríven on weekends.
As the swift is always broken, I have a super lovely epically cute NB8A as a daily driver. I never expected to enjoy a stock car this much. Typically any car I drive I immediately think to myself, hmm this car would be so much better with XYZ mod. The mx5 doesn't do this and I enjoy driving it on the streets in stock form immensely. I can’t comment about driving the mx5 on the track in stock form, still haven’t done that yet.
Now, I need to start building a new track car. It has to meet a few criteria, namely:
1. A near indestructible gearbox (I can only think of 2, the best being Supra V160 Getrag transmission and runner up Nissan RB25DET gearbox)
2. Rear wheel drive
3. Overall relatively reliable vehicle, e.g. isn’t known for blowing diffs, engines, etc
4. Easy to setup as a drift car with strong aftermarket support
5. Preferably not too expensive to buy and maintain
So that leaves me thinking there is only really one option. Get a R33 GTST. (I really don’t want a R33

Every other option I can think of either the cost is prohibitive (e.g. buying a supra) or have week gearboxes (mx5 or S15 – both of which I’d prefer over a R33 by far)
The dilemma! Do I keep the mx5?
I’d have 3 cars. It seems ridiculous to me. I don’t think I’d ever really be in a position where both the R33 and swift are broken and need the mx5 for a daily, plus the swift is being restored as a street car. So I’m not sure what role the mx5 would fill that couldn’t be done by the R33 or swift.
I don’t want to sell the mx5

Thanks to those who read my massive wall of text. Your feedback is appreciated!