Hey Rick just looking for advice. Firstly I know the 3.0 4lb lower is the usual combo on stock motor. I'm teksid with 15cc diamond Pistons, all arp everything bolt wise entirely and so forth. 96-98 cobra cams. Long tubes. E85. I also already have the 4lb lower. I'm looking to push the blower a little harder than a 3.0 4lb lower if possible. I was wondering what your recommendation is? I've seen some 2.8 4lb lowers on here but when I call the office they tell me no. I've read u say the worry is doing it on a stock motor but since mine isn't, I'd like to go more aggressive if that's not a bad idea? Possible a 2.9 4lb or 2.8 4lb setup. Thank you for your time, truly