Does anyone know offhand what size these bolts should be? I borrowed the water pump off the 4A to replace the broken 3a pump a few years back but I misplaced the bolts. I have a box full of spare bolts but am having no luck matching them up. I'm assuming fine thread and SAE. Don't think they are British thread. Hopefully I can get them locally. Worst case scenario I'll remove a bolt from the TR3 water pump and one from the housing to see what's needed.