Radiator hose connections - Stock to 5.3L

[69chevpu]

I am putting a 5.3L into my 67 using the original radiator. (I'd like a new aluminum radiator but can't afford it right now)

The inlet and outlet are different sizes.
What have you guys done to match the hoses.
Radiator has a 1-1/2 inlet motor has 1-1/4
and
radiator 1-3/4 outlet and motor has 1-1/2

I've seen some hose size adapters but am interested if some are better than others.

I have also seen adapters to put inline on the radiator inlet hose so that I can plug in my steam port line. Has anyone used this?

Thanks, Mel