NF 4kq downpipe answered

[Dave Glubrecht]

I found my own answer.  I was only comparing the 4kq downpipe to the gasket
for the 90.  Upon going and looking directly at the downpipe for the 90 I
found that the tubes are nearly identical, it just necks down a lot at that
point and the gasket is oversized a lot.
  So I will use the 5-3-1 4kq downpipe/manifold.
Also of interest I am using the 4kq flywheel and decided to put it on a
diet.  I machined off 2.8 lbs.  From 26.8 to 24lbs. according to a local
nursing home that had a nice digital scale but only accurate to .2 lbs.
I'll let you know how it works, but it will not be the best comparison as my
4kq has ~300k miles and I have not driven it in 6 mo. due to the clutch
giving up.  On the NF I did some minor porting, polishing and relieving
along with new rings in the block.
 Thank you for the assistance
    Dave G