If I were doing a conversion like this I’d be tempted to have a go at a luxury sedan from the 70s or early 80s, something like a W126 Mercedes S-Class or a Seri

If I were doing a conversion like this I’d be tempted to have a go at a luxury sedan from the 70s or early 80s, something like a W126 Mercedes S-Class or a Series III Jag. Firstly, these are big and heavy cars (at least for their time) and can cope with the weight of a battery pack a lot better than a Porsche 356 or 911. Second, they are still reasonably common and you’re not going to feel guilty for chopping up an incredibly rare piece of automotive history. Third, an EV conversion is likely to result in a car that’s better for its intended purpose (except perhaps for 100mph+ autobahn cruising, which isn’t an issue unless you’re in Germany) than the original vehicle. An electric 911 conversion is almost certainly not a more fun canyon carver or track car than a petrol one, but an electric W126 Mercedes would be a very pleasant way to cruise.