Okay Rob, I'm all in.
Buy once, cry once. I have serious audio gear for my sound company, why should my bike be any less capable?
Give me the list of ingredients for this recipe and where I can get them from.
(I don't think I need the 8.9, as the 4.9 should suffice. 70W->130W isn't even a 3dB increase...)
I'll get them on order and we'll have a project to complete!
Cheers,
Steve