440 swap

Toyotas and Hondas are a pain to work on, too- but that doesn't stop people...
Hopefully, you build it right to begin with, taking advice from people who've been there and done that, and "working on it" becomes more of a pleasurable pastime and less of a pain. PLAN IT OUT well enough ahead of time and enjoy it.
If you can pull off the swap, then it wouldn't be a pain to work on. When someone tells me something is difficult or can't be done I like to show them how to do it correctly.