63 Dodge Dart newcomer questions/advice

Thanks for the warm welcome Dartfreak and the advice, I do plan on putting a 318 in the future so it could help me in the long run. I’ve been looking a lot on this forum and I’ve learned tons so far just by reading some pasts post but an update on the same topic could refresh some things.
If your planning a swap anyways id go ahead do it and not waste your money on a new slant six transmission.
But imo I like the original slant six's in these early cars!