swap 170 to 225? (FNG warning)

i recently bought a Valiant with a non-running 170 and i've been working on getting it where it needs to be, but i just found a 225 on craigslist for $150. would this be a drop-in replacement? would anything be different that i'd need to hunt down? could i use my manual tranny on the 225?

sorry for being the newjack but the only other chrysler i've ever owned was a Lebaron :angry7:
Author: admin