There's nothing unique about the design of a P1800 which would make it more difficult than other conversions... or easier. For mechanical features, I suggest looking for 122/Amazon projects; I assume that only the battery placement and packaging would be unique to the P1800.
Since the P1800 has an enthusiast following, be prepared for some non-EV people to be critical of any project which would "ruin" a P1800 by converting it to anything other than nearly stock condition. I don't have an issue with it, but some "purist" might.
I'm just curious: are you thinking of the coupe, or the ES (station wagon / estate / shooting brake)?
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