If you mean towed howitzers then the answer is yes. Pindad Indonesia already build that. But still at prototype stage. As for tracked, 6x6, 8x8 SPH? Nope. not locally produced yet.Will definitely be cost effective. I will assume its way cheaper than the CAESAR. Doesn't Indonesia make its own howitzers?
Pindad products still focused on it's armored vehicles, firearms and munitions.
But not yet.