318 4bbl questions

I have a stock 72 w/ a 318, I put on a Weiand action plus intake with a 600 cfm Holley, put some better pipe with a decent muffler and I love it!!! Better HP? Maybe. I didn't dyno it before the swap but I don't regret one penny of it. I say go for it man. Keep the stock stuff in the garage just in case you want to go back. Thats just my 2 cents