Id be just over 190 cm too, around early 90's kg and i was more than comfortable in my 33. Granted more knee room would have been good but i never really felt uncomfortable. I sat in the passanger seat of a 2 seater 300 and found it the same sort of fit, slightly more leg room tho. The only way im massively uncomfortable is if you got a 33 with a sunroof... then i got not chance of fitting in the car.
Whether the 300 seat will straight swap into the line or not, i cant help you