Will Headers work with TBI and older engine

[JT58]

I have an 87 Chevy Squarebody short bed 4 X 4, SM 465 manual 4 speed I have mostly restored as a good driver/cars n coffee meet truck. It is somewhat of a restomod- it has a 1974 Monte-Carlo or Chevelle 350 with factory 87 TBI and electronics. It has stock exhaust manifolds with dual exhaust. It runs excellent as it is- starts right up and runs the same every time. I was wondering if adding headers would be an improvement in performance? Will headers work with the TBI and this engine- there is really no adjustment for the TBI- at least that I am aware of. I would have to mate the headers to the existing dual exhaust so it would be a bit of work involved.

 

[Catbox]

I have a set of pace setter headers made for the TBI trucks.
I have not installed them yet as I have about a billion other things to do before that becomes a reality.
But I have them....

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Super thick flanges and they look to be a direct bolt on in place of the stock manifolds.
If you don't have to deal with DEQ emissions on your truck, I would find a set of long tubes for it and modify your current exhaust to work.