Hello The trans in the Delorean is a Renault. I don t know if Volvo made an engine with the same bell pattern, but i guess you could mount a Renault engine.Some four cylinder were very powerful, and the PRV was used in the Alpine sport car, in aspirated or turbo versions, up to 250hp. I understand Renault parts are difficult to find in US ( I live in France ), but nothing is impossible. I remember renault exported the R11, called "Encore" In US, but I can t tell what engine came in it, maybe a 1.6L or 1.8L. It could be a good base engine... Have a nice day Raphael