| 1. The visual aesthetics of it :-) You are the first to say they didn't like the look of the system. This is your subjective opinion and I have no problem with that- to each their own. 2. Perfect alignment of the injectors to the lower plenum. I have taken great efforts to ensure the injectors are installed at the same depth and angle as the stock injectors. I think you may have confused this with another top-feed rail? 3. Differences between lower and upper plenum heights. I fit-test everything prior to shipping to ensure nothing causes an issue.
4. Having to modify the lower plenum for the injector O-rings, and these are what metal? Yes, I modify the lower plenum to accept an injector bung that solidly locates the injectors at the same depth as stock injectors (a "bolt-on" adapter cannot do this). Also built into the bung is a silicone o-ring cushion, limiting thermal conduction via metal to injector contact. Is there anything isolating the injectors from the heat transferred from the lower plenum? See above. My lower plenum is port matched, blue printed, and extruded hone. it was done a step process so everything was properly fitted. I would hate to have something happen to my lower plenum. I would hate for something to happen to your plenum as well; I haven't ruined one yet. 5. Modified Balanced tube, in my case I have to have it re-chromed :-) more down time. Yes, that sucks but the desire for chroming is subjective. Again, I have no problem with that. 6. Throttle body bracket has to be modded. I modify the throttle cable bracket for a very modest fee. 7. with all the work you did you should have made the rails have dual return so they could feed the rear cylinders first which run the hottest. Again, I think you're confusing my system with another top-feed rail. My rails are two individual parts with inlet/outlets on both ends; with easy access on top of the plenum, the possibilities are almost limitless with respect to plumbing the inlet(s) and return(s), in series or parallel.
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