Ultimate, no compromise manifold. The short runners provide a direct shot to the back of the intake valve. Ridiculous top end pull. My ported stocker fell on its face after 6k. I swapped this one in and it kept pulling to my 7500rpm redline. It took off half a second and gained 3mph in the quarter over the ported stocker.
It's currently short runner only but has all the parts to make the long runners work. One rod is from an aviator manifold and needs slight welding only to set where the butterfly valves open and close. It should be a simple fix but I never got around to it because I didn't think the low end was bad with the short runners. My car has 4.56 gears but is also 3800lbs. Also there is no gasket for the upper lid and of course ford doesn't make them. I used a small bead of silicone and it sealed up great.
Asking $1,400
It's currently short runner only but has all the parts to make the long runners work. One rod is from an aviator manifold and needs slight welding only to set where the butterfly valves open and close. It should be a simple fix but I never got around to it because I didn't think the low end was bad with the short runners. My car has 4.56 gears but is also 3800lbs. Also there is no gasket for the upper lid and of course ford doesn't make them. I used a small bead of silicone and it sealed up great.
Asking $1,400
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