And one thing to consider if you're going to make these for customers:
Make the angle of upper arms of the Y-pipe adjustable or flexible. That way you can match them up perfectly with your intake manifolds regardless of what size spaces you use. This would also allow the use of spacers between the engine and the bottom of the intercooler.[/quote]

Well that is a great idea, but not really a realistic idea, imo. I build everything accordingly to the customers parts and needs. The spacers are such a great part to run I dont know why anybody would not run them. Plus I build everything to fit perfect with no real adjustments, because they should not be necessary. Hope that all came out all right. lol