overheating

well,---my 1969 340 barracuda has a overheating problem !! upon investigation/tear down concluded to the fact that the passages in the timing cover/water pump housing are corroded shut .... cleaned them out with a scraper and a shop vac. not sure if there is enough (meat) on the passenger side to seal the pump properly//half way to a timing chain check,,,

1.) can I take the cover off without dropping the oil pan ???
2.) does anyone have a descent cover laying around for a descent price zip # 12051//????? timing marks on the passenger side :prayer: