A Bug? Really?
I know the later vans were competent. But the last time I drove a traditional van, 3 hours uphill on a camping trip, my sister pleaded with me to not push it hard because the OEM engine had scattered at 65k miles and now the replacement engine had 65k.
My own experience 40 years ago with my 59 Transporter (windowless van) was the 54 mph redline on the speedometer was very real. It puked when I let it run up to 65 down a long grade.
In our hot climate, often over 100, it was 'common knowledge' that adding A/C on a beetle would shorten its life.
I cooked the A/T in an AMC Eagle towing a trailer not as large as that one even though I was well under its tow rating. And the car had gone to 'limp home mode' from the heat. Too much wind resistance, and hot weather. The A/T dribbled fluid everywhere when I got home. $1k rebuild. I can't imagine a Beetle would do better.