Water pump to intake size

I found a 3/4" to 1/2" reducer then I found a nipple to screw into that. Then the local autozone let me rummage through there radiator hoses and I found a 3/4" house with a bend that I had to cut a little to fit, works great with no leaks. Might all be for nothing though as I just a found a 340 for sale on this site I think I am going to buy.