those nozzles are expensive, I think I would have to get a reducer from 3/8's to 1/8. I haven't tapped the holes yet so im not entirely sure what size tap I will use, but I think its about a 3/8's inch.
any idea how much timing advance I will be able to run with an N/A upper intake and an L67 bottom with an XP cam?
3/8" NPT is a little large the hole is just over 1/2" for the tap, 1/4" NPT would be a better choice and 3/8-1/4 NPT reducer bushings are easy to find even at Home Depot.
Jeff
An engine is an engine no matter the size.... I think Dr. Seuss said that... or maybe it was Big Weld....