I have seen quite a few 4.6 modulars with an oil fill extension neck connected to the stock valve cover and the cap on top. I see them on 4.6 engines in 5.0 Mustangs & Super Fords all the time... Does anyone know where i can buy one of these??? Thanks.....
there are 2 designs from Ford, 1 is off the Econoline which clamps over a "cut off" fill tube and another is off the DOHC Avaitor which screws inplace of the cap. we can get them if you want.