I have a 1969 sea ray pachanga that I just redid the transom and stringers on. I am going to cut the hole for a bravo one drive soon and don't know what my x dimension should be around. Boat is only 19ft long, similar to the size of an 18 donzi but with a deeper V. Boat will be powered by a 420hp 454 which I am going to mock up to see how high I can go to clear my engine hatch. Can anyone share with me what they are running for an x on a Similar setup or give me some insight?

I would set it up with the propshaft 3-4 inches below the bottom.

3-4 inches will probably give you the best planning and cruising results. Good luck and be sure to take as many measurements as you can to square everything up!

If you go with 3" or even higher, you can always use a spacer to go lower.

tx post a pic of how you laid out the transom on your excalibur and some explanation if you could,
i remember you really went the extra mile with it and got some great results.

gageski101 how did the boat end up, you started a restoration thread, post some pictures.

Posted some more pictures in my restoration thread, here's the link if you want to check them out. 1969 Sea Ray Pachanga Restoration