1998 Chevy Blazer LT - REDUCED -

Extremely clean inside/out 98 Chevy Blazer LT. 4 dr, leather seats, Vortec V6 automatic, a/c, heat (?) , heated seats, pwr windows/locks/mirrors/driver seat, sliding sun/moon roof, am/fm/cd. 140,000 miles. Needs work, but, for the right person, this could be beneficial..... not this repair challenged individual. Needs radiator. Possible heater core? Recent small star burst driver side lower corner windshield. Engine ticking/tapping. Engine starts/oil pressure fine, however, after short drive temperature readlines then drops. As temperature drops, oil pressure begins to drop to about 20. Then when comming to a stop, oil pressure drops to 0 (OIL PUMP?). Side mirrors replaced 08, a/c redone @ 2yrs prior, r&r rear pad brakes 8/09, front rt hub assy 8/09.