273 Coolant leak help

Finally got the time to tear off the frontof the engine.
Couple questions.
#1 Do I replace oil pan gasket?? It appears in good shape and oil pan has not been removed.
#2 Should I install drip tab? Chain and gears are from Comp and only around 8000 kms on it. It also looks in good shape. Obviously if I go with drip tab timing chain and gears have to come off. Wondering if there is enuf of a benefit?

Thanks all
Steve

20160729_085025.jpg

20160729_085043.jpg