Re: help anti freez leak issue
The wep hole is there to give you a visual indication that the front seal has gone bad. Every revolution adds wear to both the fron and REAR seal, it is not long before the rear fails and that coolant will be mixing with your oil.
The suggestion above that the engine could be run TEMPORARILY did not mean "oh, I can still go play around for another week and hope all will be OK"
Run it only enough to get it back on a trailer, lift, to mechanic etc.
Are the parts in stock at local marina? Very doubtful, this was an oddball engine to start with and has not been produced in two decades. You will most likely need to order online and wait for shipping. Then if anything else is discovered during repair, wait for those parts as well.