Porsche with the MOST interior room?

Hello, I am considering buying a used Porsche for weekend fun drives (not daily driver) and have always admired the

I wondered if any of you can tell me from experience (I have not driven one or even sat in one) which models/years might have the MOST inside room for the driver? I am not a small guy 6'6' and need a good deal of leg , head and shoulder room, (backseat room not important) but wondered if there were runs of these models that had more or less room or if in general a 924 has more room than a 928 or vice versa...

Beyond that just looking for something to tinker with, and before I drive a good distance to go see a few used ones (autotrader.com) I figured I would see what input I could get from some of you would be on what years/models to possibly look for - or if a 6'6' larger guy is dreamin if he thinks he could drive an older model Porsche...(84-90)

Thanks,

Bill :)