cryer

iTrader: (1)

I am new the turbo stuff but I am chassis builder and have done many sets up headers. I am going to be doing my turbo g-body very soon ,and will be building my own collectors as well, I am going with a 91 mm t-6 and probley 109mm with a 88 step down for a local class up here.
what I am wondering is what size should I make the collector. I will be using 1.750 headers that I will build as well
any help will be great
thanks josh