My 1972 Plymouth Duster...plus a 71 Scamp?

Yeah, I was thinking about putting all the Slant Six stuff back in the Scamp. I guess I could probably sell it for a couple grand. I've got my "beater", it's a 97 Corolla. I need something that gets decent mileage. Yeah...it can get pretty cold up here, but it's actually been a decent winter. It's above freezing today, which is completely unheard of in January. The day I was born (January 21st), it was -42C/-42F...now that's damn cold!