I will be running in PSCRAQ next year.
Looking around at the cars you can run. While the NA NB mx5 seems a great little choice for new driver like myself. My car has about 10-12k all up. I know where I'll be running next year. Like a porn star, banging away at the rear.

To make the car turn in some good lap time the out lay is quite steep.
Example to make a mx5 run a sub sixty in 2F form you would be looking at a out lay of 60-80k plus a very good driver.
The other option would be to go to the states pick up a late model Vett 30-35k ship back and fees 5-7k all done 35-40 k. Plus GM running gear.
To be honest if I could fit in a lotus, that would be another option from the UK 15-20k track ready plus shipping. Runs a toyota motor.
Or though a little long in the tooth FD Rx7.
The Nissan stable....
Seems to be for bang for buck maybe the mx5 is not a such a good option now?
Thoughts?