Thanks for the kind words!!
Yep, the roads are great when the snow thaws. Had a bunch this year :-(
Yes, tuning was done without the filters. Tweaked the idle a bit after installing but it was minimal. Not sure the filters even changed the idle.
Sorry for the delay but I looked all over for the invoice and part number and haven't been able to find it. I purchased the filters from Frank at Hillbankmotorsports.com who is a spf dealership. I'm sure anyone who handles Roush engines can get them.
I think it is a Roush specific part made by K&N (K&N stamped on the chrome top ;-)
Ok, I found it!! --> Roush's part number is 401390. Their web site is:
ROUSH Performance : Online Store Ford Vehicles
You can download their catalog. The filters are shown in the last section of the catalog.
37 choke
F-7 et
60 idle
100 idle air
45 pump
60 bleed
160 main
170 air
Good luck!