I think its a fine idea, it be a lot more expensive to rebuild that 4.6, its your project dont worry about some future buyer you might not sell the car too cuz its got the 351....go have fun its what the car is for
don't be a vagina. If you are gonna put something like a 351 in it, why not go all out and punch the thing out to 408 cubes so that you can actually make some real power.
The 380rwhp you are gonna get out of a lame ass 351 is gonna get boring real quick.
I think its a fine idea, it be a lot more expensive to rebuild that 4.6,
$3600 can just about build the entire windsor engine not just the shortblock. And thats with a eagle rotating assembly, 69 model block, and aluminum heads. you need to make sure you get good machine work