Who here has a 440 with the 500 or 512 stroker kit from 440source. I was wondering how reliable their products are. I'm putting it in my 68 Charger it will be more of a cruiser and run it a few times. I was wondering what kind of complete setup you have and how much hp and torque you have.which is better the 500or512 stroket I plan on putting a holley 870cfm carb and use stock heads and was wanting to put purple camshafts in but was wondering which ones to get I'm looking for 425-450 rwhp.