i removed water pump on sat and it was as new ... rad inside also as new however when i removed radiator half of the frontal area facing bumper had crude or dirt and etc etc blocking the fins , now i know that wont cause my coolant shooting out scenerio but would cause car to run hotter at idle because of blocked air flow

anyways pullin head tonight and slappin on tt hg

 

Water pump question. MY '95 SC300 WP has 4 mount bolts that are threaded all the way and 2 that are threaded only part way up the shank. As I wasn't paying attention, any idea why and which holes do the 2 that are different go in to?