if you plan on running a stock front end flipped in the back good luck holding. its not hard to build a good motor as long as you keep it cool. you can build 418 motor and it hold good. just make sure you have a lot port work so it will have plenty of cool air coming in to keep the motor cool. you will need a gr to pull 32s. if you ahve not already got one send me a pm or text me 870-918-2586. i can help you out on this build. i know the 300s in side and out.