All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
Are you sure the oil pan is leaking rather than running down from above? Have you verified oil isn't leaking from the intake manifold valley, or the valve covers, or the oil pressure sensor, or rear main seal, or the oil filter, etc.?1973 C20 with 350 engine - oil pan gasket: Try a Fel-Pro OS34509T one-piece gasket set. The question regarding exhaust packing relates to vehicles that require removal of the exhaust crossover to gain suitable access to the pan. Some gasket sets come with the exhaust packing, some without. If you have single exhaust, you will probably need it. But, you can always procure exhaust packing separately if necessary.