Big blocks with motor plate & mid plates

Thanks so tell me more about it... am i going to need an aluminum water pump housing?

also how is the mid plate installed in your car? do you keep the stock trans mount?
thx
Tony when I did my motor plate they told me not to use an aluminium water pump housing. This was because it now holds the weight of the engine. I used an old housing and machined 3/8 of an inch off of it to allow for the thickness of the motor plate. I do use an aluminium water pump for weight reasons.
Can't help on the mid plate as I don't use one.