letted

Hi
Q: what size radiator core, non-towing regular duty--listed at 15 3/4 and 16 3/4 current one was from 89 SR5 stick, so its different and measuring in the frigid freeze up here in VT is not too accurate. I get different offering options
Q: are the offerings from Advance Auto, Autozone relaible..
most all are plastic with aluminum cores..metal ones are very higher price, doing an engine switch; no radiator repair shops any longer
thanks