350 crate motor in 86 monte carlo ss?

Im about to buy a 84-86 monte carlo ss, and i want to put a 350 motor in it, im going to buy a crate motor, opposed to a rebuilt motor, but i wanted to know first of all will i need a new transmission also if putting it into the monte? will i need any new parts besides the crate motor, assuming all the stock parts work fine? last of all, will this crate motor i have in this link here fit into the 84-86 monte ss?

heres the link:
http://www.crateenginedepot.com/store/350-Crate-Engine-290-HP-HO-12499529-P824C2.aspx