Tubular Turbo Manifold - Firing Order Matter?

Hey all, first post here.

I'm currently piecing together a tubular turbo manifold, I've picked up all the necessary bits.

It's for a turbo MX5 drift car, it's been turbo for a few years now running a Subaru TD04.

When looking at typical tubular manifolds on offer for sale, some seem to keep the runners in order of the firing order 1-3-4-2, others don't.

Now the only benefit to not having the runners match the firing order is it appears to be a bit easier and neater for routing the piping.

My question is, how much does this matter?

Being a Subaru flange, there's no need to worry about divided flanges.

I intend to run this manifold with my current setup for a while to see how it holds up and eventually put a slightly larger turbo on and a power target around 300ish.

Any info with regards to this aspect of the design of turbo manifolds would be appreciated.

From what I can tell it doesn't seem to matter for a turbo engine. I think getting it in the place you want and the neatest package would be all that matters.

If you can keep a fabricated tubular manifold from cracking, you'll be ahead of the game. 

My understanding is that you want the smoothest, straightest run you can get. It's not like tuning a header where you can get a scavenging effect.