22' Scout Thru Hull Exhaust
 

Before I start drilling, I thought it would be a good idea to ask for some advice. Currently the boat has the stock setup. I like to put Thru Hull exhaust. Is there a template or how do I drill the holes in the proper location. I will be installing a Stock 5.7 with a Alpha, but during the winter I plan on building a 383!!! I just want to get in the water this year!

Thanks,

Todd