Well it's an AP2. If that means anything. Never really sat in an AP1, but they look sorta smaller-ish. Like the miata and the MX5. I fit in the MX5 but not the miata; my knees touch the dash unless there is a race seat installed. I've driven my buddies race miata with the seat bolted to the floor with stock dash and I fit nicely.
But for price, if you mod the seat in the miata, it is defintely one of the better options. So many mods and such. So many parts. And they aren't terrible in reliability.
With that being said, I just got home form getting gas and while I was there, a miata serves in and parks. The driver and jumps out, lifts the hood, and a huge cloud of steam comes out.