The ModuleScienceContainer on pretty much all such parts that have it could have a couple lines added to mimic the "science box" part from stock. This is more a quality of life issue in career/science mode, as currently the science clickfest is to run all the experiments stuck to the craft, then EVA, "take data" and then store it in the vehicle heading back to Kerbin. An Apollo-style mission means doing that at the target world in the lander, then you dock, and all the crew but one transfers, while the last does an EVA to transfer the science to the return vehicle.

For the LC2 pod such a change looks like this (changes remarked):
MODULE
{
name = ModuleScienceContainer
reviewActionName = Review Stored Data
storeActionName = Store Experiments
evaOnlyStorage = False // changed from True (unsure if this should be True, needs testing)
canBeTransferredToInVessel = True // this was taken from the stock science box part
canTransferInVessel = True // this was taken from the stock science box part
storageRange = 2.0
}

As I remarked, the evaOnlyStorage is the one change I am unsure of.