I am planning a 4.7(using a 4.0 block) with a t-18 and D300 for my YJ project. I have the engine and t-case coming, but want to know more about the t-18. As far as I know that transmission will bolt up to the D300. I have a chance to buy a cast iron 6 cylinder bellhousing and 1" input shaft. Will this work on the 4.0 block? Any other info is appreciated.