So I decided to build a 360 for my Valiant :)

Dartswinger70 said
For me it doesn't interchange with my set up I have a 340 so to have a 360 as a spare Id need the trans and flex plate/flywheel etc. Isn't really anything about the 360 engine itself, more about interchangeability.

Ah ok. Well there’s only a couple years of 340 that are internal. The rest were external balance like the 360.