its a fairly easy mod if you can fabricate and weld and the coil packs are much cheaper than split fire and they pack a bigger punch ,at 135mj the oem and splitfire coils would be no where near that
nothing worse than upgrading the ignition a total of 3-4 times in a build and it becomes costly just do it once and do it properly for a reasonable price.
the yanks have been running ls2 coil packs as C.O.P for a while with no known issues
we have been testing the ls2 coil packs as a C.O.P , currently setting up 2 x sr20det 500 hp race rally buggies, 2 x drift cars 2jzgte 600 hp and rb25 500hp ( will post in the near future but we would need to run them for a while in extreme conditions to really see a conclusive result )
I would advise against fitting any sort of cover over the coils !
I have attached an image of a rb25 with forward facing manifold but you can clearly see the cross over pipe wouldn't be an issue
one advantage is even if a coil fails you can buy a replacement without hassle.
The split fires were replaced because insufficient spark ( which was probably 1 coil causing the problem but i wanted to test this setup and this was my chance, the customer refused to go back to the split fires he explained that this was the best the car had ever run.
along with many other issues that plagued this vehicle including a sticking WG flapper on return , once i worked through most of the issues the end result was 320 kw on 22 psi
go to our facebook page for more details https://www.facebook.com/advancedjapautoimports