440 build questions

Hi, I’m building my first motor for my 73 scamp I have a 77 440 that I was hoping to keep stock in the bottom end.
I have a 528 3 bolt crane cam that I wanted to use I have hydraulic lifters and some Harland sharp 1.5 ratio roller rockers now I’m just looking for the best set of heads. And an intake

I have a pair of stock 906 and 452’s but I was hoping to go aluminum. But cheaper the better. I found a pair of pro comps that are priced right but they have 2.25 intake and 1.875 exhaust. Will that be way too much for my build? What are some other options? I just want to get down the track at a decent speed for now.