I'm waiting to hear from him. I gotta say, like Jim @Downey stated about different engines, it would be very unlikely we mounted our V8 exactly the same. Even with a template, I think it would still be somewhat a gamble. I'd hate to be caught in the middle of dissatisfied customers.
I know what you mean. However, like I said, leave the shifter holes out of the equation (final end user makes holes to fit). Then get rough dimensions of the template needed. Sounds easier than it really is, but I don't think it would be that hard. Especially if I gave you dimensions of the large hole I have in my cover.