It's not the engine and parts that cost a lot for swapping them in... it's all the other stuff you need. I thought about the swap into my challenger, but I decided to stick with a stroked 440 and add an od trans. Maybe not as good mpg's but more power for less $ overall.
Same here, I've done alot of thinking and searching and I've decided my next build will be another super simple BB stroker. 340Rick put a Gen3 Hemi in his Challenger with a stroker kit and a few little upgrades and it went 9.91 right off the bat, that is just awesome but for me and my tight budget I'm just gonna do my old combo again, a simple 400 block, 440 crank(451 cubes), 590 Purpleshaft cam and some Eddy heads, I went 9.80's with this combo and I'll probably detune the next one and drive it everywhere.