Need help or oppinions.

The truck in my sig injector duty cycle is 100% at approx 80-90% TPS. I need upgraded injectors but I was thinking used injectors cost $250, I might as well upgrade everything and do a nnbs intake with stock injectors for close to the same price but a little more work. I found an 07 e85 Tahoe intake manifold with stock fuel rails and stock injectors (injector part #12594512). Im looking for some experience or oppinions. What makes more sense for the long run. Upgrade my stock injectors to 8.1 marine multech injectors. Or upgrade to 07 intake manifold. And if i upgrade to 07 intake setup will the stock injectors be enough for my engine. Any oppinions or advice would be helpful. I know the nnbs intake manifold is returnless and takes some work to make it function correctly.

what are the expectations of your engine. it all depends on how much you are going to expect out of it. if all you need is a little more fuel, then i would upgrade the injectors.

I really only need a little more fuel. My injector duty cycle maxes out at approx 80% TPS. But I also have a bad habit of never turning down a new project. Especially if it means more power and better flow. I'd really like to convert it to a DBW TB at the same time if possible.

Does the Dr.x Adapter work on 99's. Ive tried checking for a few wesites but find anyting on the ones ive looked at. They say nothing sold in that category for ym application.. Anyone have a link where i can find one if it does exsist.