What power heads are interchangable

[jpgiamba]

I currently own a 1989 150 prov.. It has a blown power head. I was wondering what year model power heads are inter-changable with my motor.

[99yam40]

Click on the red Purchase Yamaha Parts at the top of the page , find the part you are looking for, click on it and on the lower part of the page it will list all of the different models that this part is listed for

[jpgiamba]

The link is great to identify parts and oem p/ns.. however my question is what other powerheads will bolt up to this motor. I have been told any 86-89 150 and 175 block is interchangable. I am asking the forum if anyone has knowledge about this topic in particular and what my options are.