I've got a 1990 SW20 and get out on the track 1-3 times a year and tend to spin off the track about once a year.  I'm sure that with more track time I could tune up reflexes to help avoid the spins but I can't justify the track time.
 
I wondered if a driving simulator could help with practice for controlling snap oversteer or if they are too remote from real world dynamics and feedback via seat of pants etc.  I'd seen that some of the new racing sims say that they have pretty good car dynamics and I'm sure that there would be something that had similar balance to an SW20.  Anybody have experience here?
 
I've got a spare MR2 seat, an HDMI TV and a higher-end PC so it would feel pretty nice.
 
 

*EDIT* Brian, I just realised it's you!
 
I started using the Assetto Corsa racing sim a few months ago and the physics seem very realistic. I think it would definitely help improve your skills in the real world (there are other racing sims that are also very realistic).
 
I find sim racing much harder than real life (I'm still learning so I'm very bad at it) because you don't get the seat-of-the-pants feel, but you learn to use other cues to anticipate oversteer and understeer. I think that if you learn to drive well in a racing sim then you'll probably find it to be a walk in the park in real life, because the physics are very similar and you have the seat-of-the-pants feel to make it easier.
 
The only thing that makes real life harder than a racing sim, is the courage that you need to have to brake late etc.

'Snap oversteer' 
 
Surely there's a better description than that, the car will flick you off - but just that term grates me. 

+1 to Assetto Corsa.
https://store.steampowered.com/app/244210/Assetto_Corsa/
<$50 for the Ultimate collection, plus you can download a LOT of cars and tracks.
 
AW11 - http://assetto-db.com/car/toyota_mr2_aw11
SW20 - http://assetto-db.com/car/toyota_mr2_toms
 
Gets you started :)

Driving a sim like Assetto Corsa is a great way to learn all kinds of things about performance driving, but without risking life, limb or wallet... thought it does take quite a few $$$ to set up sim racing rig that's really authentic enough to train your responses for real world situations. 
 
I've been thoroughly enjoying AC from the day it came out - and I still drive it almost every day. It's great fun. It's allows you to drive like a maniac without the risk of trashing your car, going to jail or killing someone else. And it means you can do something with your personal R&R time that's far less brain damaging than watching the crap we're being fed on television these days 
 

rfactor 2, there is a MR2 mod somewhere on the internet thats fun to use.

I've got about eight MR2's for Assetto Corsa - including both SW20's and AW11's. Some are totally standard while others are set up for trackday (with semislicks) and race (with full dry slicks). Some are NA and some turbo... so basically all the MR2's you need for serious sim racing fun.
 

Guys, thanks for all the tips.  On "snap oversteer", OK, most of the time it's simply me going into a corner too fast, panicking, backing off, and not being quick enough to catch it:-(

when in doubt, power out. well, at least 80% of the time.

Thanks again, it's all working and an amazing package.  I downloaded Mt Panorama and it's spooky to spinoff on conrod just where I have in real-life.  And press a button and everything is fine again!