Any possible way of saving Instances with DataStore?

Basically, you save all the relevant properties of the Object you want to save in the form of a Table or JSONified table, and write a function that takes this table and creates actual bricks out of it.

For example:

PartsToSave = {
	Part1 = {
		Name = "Test",
		Reflectance = 0,
		Transparency = 0, Size = {20, 15, 6) --[[Tables can't contain ROBLOX Instance to be DataStore'd IIRC]],
		Position = {256, 2, 10},
		Rotation = {2, 0, 0}};
	Part2 = {...};
} --And so on

Using this table and nested generic for loops using the pairs iterator function (since ipairs doesn't for non-numeric indexes), you can Instance.new() the parts and set the relevant properties.

I suggest giving PartsToSave direct subtables of the Parts' types, namely Wedges, Trusses, and just Parts, to make the loops simpler.