Power head compatibility for swap

[xracer25]

Hello
I'm looking to replace the power head on my 93 150 TXTR with one from an 88 150 ETXG.
Is this a like for like swap or will it take some modifications?
Thank you

 

[xracer25]

** 1993 150 TXRR

 

[99yam40]

Blocks do not match.
looks like you need a 1990 to 1994
but that is just a guess

 

[xracer25]

Blocks do not match.
looks like you need a 1990 to 1994
but that is just a guess

Thank you