Make your own intake.
There was an Edmunds on Ebay just recently. Have a little patience, there will be another one soon... They also come with provisions for water heat.
Using the adapters on a 2x1 intake will hurt in the higher rpm's, but for typical street use it should be fine. Alot of people are running that combo.
I believe the Clifford 2x4 is only available for the later sixes, so making your own is your only option, as far as I know.
