pro comp big block heads

after getting the heads and seeing that I would have to replaced the valves,springs,retainers,i read elsewhere that the guides are cheap,and the push rod tubes need to be open up,so not wanting to put a ton of more money into them I sold them on ebay,i am looking for 440-1 heads,was going to use b-1,but they told me I need new pistons as I couldn't use the pistons I have,and they told me they would only work on 4.5 bore blocks,so,im returning to 440-1 heads,looking for a pair with roller springs