on the valve cover nuts just use a small wrench or 1/4 drive ratchet and use only wrist power, i just did a m42 318 motor build that i had to install 17 heli coils in the head because the former owner/mechanic didn't know when to quit. the package for the plugs should tell you torque, i feel them in, i've done so many i can snug them in till i have just squashed the crush washer (usually 1/2-3/4 turn past contact. the radiator has a trans cooler built in but you can bypass it if you want more, i installed a cooler from a e36 325 when i put a bigger 540 radiator in my 535 because the 540 radiator doesn't have a internal cooler, i just kept about a foot of the e36 metal lines and cut and flared them and double clamped them to the 535s rubber lines
all america wants is cold beer warm cat and a place to take a poop with a door on it