The swap doesn't sound like it would be too bad. If your lines were rusty from salt anyway and needed replacement it would be something I would do while I was in there. If you had a doner car you could move all the bits over from it should be straightforward.

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.