LA 360/5.9L Small Block Build - Advice?

For anyone with questions about the red V8 in the '65 'Cuda, that was pulled from a 1965 Plymouth Valiant 200, it's a 273 2BBL. Initially the 'Cuda had a 225 Slant Six in it from factory. I've driven with this 273 for a matter of months, won't be driving it through the winter, I've got my 2001 Dodge Ram 1500 Sport 5.9L 4x4 Truck to do that haha. I've given this 273 to a relative, and am in the process of putting in a 1996 318/5.2L (converted to carbureted) motor in the '65 Plymouth Valiant 200. For those who are out there to discriminate me for parting out the '86 Dodge truck, wahhh, it wasn't worth the $$$ to get it road worthy at the time + fuel mileage would really suck haha.