Yeah, the physical dimensions on the modular are huge. Ive heard lots of people compare it to the older big blocks in actual size. The cast iron blocks are heavy as hell but the aluminum ones arent so bad. I dont have numbers in front of me or anything but the teksid block is allegedly able to handle over 800 hp while the cast iron block is capable of 600 ish I believe. Do that with a stock windsor block and see what happens. lol