you will need all of the shit (axles, shift linkage (modified), ECU, all emissions equip if you wanna get BAR approved like me) for the swap, depending on the mount kit you get it will either sit then engine forward (Place racing)...or back a little more (HCP).....there are no hood clearance issues with a B18A/B...and the weight difference.....well it took at least 6 of us big mo fo's to pick up the B18 and 2 to pick up the D...........