It's not bad at all. I'm old, hefty, and have a rickety back and have no problems getting in and out. It's so much easier than climbing out of my kid's 09 Mustang.
A pic of my herd. Sold the 66 not long after I bought this one.
This has been a dream car of mine since I was a kid. Loved the old mustangs. Would never want to hot rod them. Just want one to cruise the country roads in on a Sunday afternoon.