New thottle body or no

[Loose nut]

Hopefully someone can help me out here. I have a 96 GT with bbk cai, H pipe flow master no cats and stock headers. I want to add a throttle body. My question is say i add a 75 mm sve throttle body, would i get any performance increase with my stock headers? And just how much are stock headers restricted? Do i need to just to just wait until I can afford headers? Your suggestions will be greatly appreciated thanks in advance.

 

[Dark04GT]

75mm TB is good for a couple horses. If your plan is full boltons there is no need to wait for headers to get some small gains now.