Water/Meth injection under FAST SFI TBI set up????

We had a neighbor that had an 81 turbo Trans Am that put water injection on it.

One day he parked on a hill and it siphoned into the engine and hydro-locked it because the water supply became higher than the carb when he parked.... :banghead:

Lucky for him it was close to TDC and didn't bend a rod.... #-o