340 vs 360?
id go the 360 if i was you.
Plus it sounds like that combo your buying is proven!
I find people get too excited over 340's.
I dont find them superior over 360's whatsover.
If your planning on going the whole way with a motor,
heads,stroking,pistons etc i think its better if you start
off with a 360 anyhow. There cheaper too.