Repowering of my 23' Seacraft walkaround model.

[bj]

I have a 1988 brochure and all the 23' models say a maximum HP of 200 or twin 150's. I have a 1977 or 1978 (not sure which it is) that says all 23's have max of 400 HP. I am not sure which years but I think some of the Sceptre 23's even had a 500 max hp rating.