Big Block in a 23' Tsunami ?

[abl1111]

As many of you know, I am re-doing a '75, 23' Tsunami. Transom is done.

The conversion from (2) i/o's to (1); new motor beds and bulkhead are in. Old i/o holes structurally sealed ( not cosmetically yet ).

I am starting to think about which motor to put in - not to mention the drive. A book can be written about the different opinions of which drive to use !!!

I was leaning to the Mercruiser Horizon 5.7 - 300 HP. Would anyone recommend going larger, like a 454 ? Remember - the boat had (2) 4 cyl's in there originally... Any opinions here; pros and cons ?

Thx