Thanks everyone for the input, I've been having a bit of a look this morning and I'd like to go to the a15 but my a12 is round port so what time and money I spend setting up the induction for the 12 would have to be done again with the 15 and would need different manifold set up as well... I hope the minister of finance doesn't check the bank in the next month then or she might think she's getting a lot of presents hahaha not to mention if the a15 some how falls into my lil ute... But really thanks for everyone's points, as I said b4 I'm just starting my datsun journey but I'm already surprised at how many enthusiasts are keen to help the beginners out with nit only knowledge but parts as well it's a real plus for everyone involved.
Cheers Corey