I’m 6’ and 165m I fit okay, but it takes a few minutes to get used to having the instrument panal about a foot away from your face, and you solo from the front seat only. Are you looking at Roger Allen’s bird?
Welcome to our wee club for the Skinny Birds, Robert! Last Fall, there was a Collegiate for sale in Salem. I haven't heard if she's been sold yet. If you weigh under 200# and are less than 5'10" tall, you should fit just fine in the front seat. You'll find a lot of information on Porterfields here, just wander around: you never know what you'll learn.