Question on outboard jet HP

[Pawatch]

Would anyone happen to know exactly how high the transom on an allweld boat needs to be with an 88SPL with jet?

I would use a riser on your transom for your jet height. Some variables setting a jet. If your running a tunnel you will need a higher transom. For my 1648 50/30 jet. Have a 22" transom no tunnel.
My tunnel hull not sure what my transom height is exactly on that. 1654 with 90/65 jet.
Would think 27 could be close. I will try and get a measurement.

 

[Scooby]

Should be around 27"

 

[Scooby]

How much more would the 88 SPL than the 75 Evinrude,would it be worth raising the transom for the 88 and would it gain that much by adding another 100 lbs ?