LCE header at elevation 3rdGen

Anybody have an LCE header on a 3rdGen with an automatic at elevation? I live at 6500 feet and was up in the mountains yesterday and certainly could use more power. There's power there but most of it is at 3500-4500 RPM. I was pulling for long periods of time at 4500. I'd like to hear from guys driving above 5000 feet with a header.

BTW - my 6th toy truck, over 40 years of ownership. First one was a 1972 Hilux with fog lights on the front fenders! 1993 with the the 4cyl/4wd was the best....2000 was good too, until Toyota bought the truck back because of a rotted frame.

Dave

 

Installed LCE equal length header last month @ 39,000 miles, ran 3 trips to and from Prescott (6050') to Phoenix (969'). Used 4 tanks of gas and 1 can of Berrymans Chemical tool to clean out any carbon deposits / varnish in the system, varied speeds and loads to get a feel for any differences in performance. On the last tank I drove as normal (same driving style, unloaded) to check milage; coming up the hill to Prescott I usually get 22-24 mpg, this trip calculated 24.7.
Noticeable Performance gains only after 3000 RPM, as expected; engine pulled harder and accelerated faster, but that's not where I normally drive (2000-2800 RPM).
Am seriously considering the 2016+ version of the URD MK3 belt-driven S/C to get the drivability I'm looking for...if it ever gets to the market.